I love the chemistry between Sandi and Stephen, I'd love to see a new episode where he comes on as a contestant.

Now that Sandi is host, Stephen needs to return as a guest on the panel.

Such a nice clip. You can see the hints of what is to come with Sandi and Alan

"theres a problem with your argument"... omg, i died.

1:56 "Well there was probably a secret agent around the corner!" 🤣🤣🤣

"We've all heard the rustle of a magazine from the other end". Hilarious!

Hilarious. So glad this show continues to be produced. So much fun

sandi and stephen are always a treat together

That last interaction between Sandi and Alan was priceless😂

If it were about caloric intake, there would be a vast difference in the ratio of the sexes between now and a few centuries ago, yet there isn't, so this seems like a bad study. Temperature (which I often hear as well) is also ludicruos because that would imply that different climates have different ratios.

I always love it when they use their buzzer as the answer.

For a non native English speaker it would be very helpful to have auto captions on, it's sometime very difficult to understand what is being said and the punchline is missed. Can this function be enabled please?

That's why I always shout "Goaaaaaaaaaaaaaaaaaaaaaal!" when I finish.

Chem tween Sandi & Stephen? Sandi & Alan on watching footy while having sex is GLORIOUS! lolol

At 1:35 Sandi says, "And those people who had Coco Pops had chimpanzees." It's a fantastical idea but also a logical and rational conclusion from the statements which preceded it.

It would have been nice to hear him do an East Anglian accent which he can. I believe he has a place in Southwold and the accent is very difficult to do if you’ve never lived there. Actors get it wrong all the time and mistake it for the West Country accent.

US audiences never stop yowling and hooting, English audiences never stop howling with generous laughter, German audiences never stop clapping at the slighest incentive.

I studied something similar to this in uni. Maybe it’s possible that having a higher number of boys during periods of scarcity would be an advantage because generally males would be hunters and would leave the group upon puberty whereas girls tended to stay with their matrilineal families. So sons are a shorter-term investment than girls, which is ideal for periods of scarcity. A woman eating a diet lower in fat and sugars and higher in grains and similar foods may be getting interpreted by her body as a period of low quality food availability, and therefore producing a daughter who may compete with her mother in the near future lowers the mother’s reproductive fitness. Also girls reach fertile age far earlier than boys, so if you have a girl you’ll be having grandkids earlier which is not ideal during a famine

Alan speaking from experience about the football!

I cannot recall Bloodhound Gang's specific song/track (its on the 'Hooray for Boobies' album) but am mindful they commend 'Do it doggy style so we can both watch X-Files'. I don't recall the probabilty differential this might induce with regarding the sex of any resulting offspring.

Many years ago the Royal Navy did some studies with their divers and apparently those on active diving duties were more likely to have daughters than those not on diving duties.

2:52 That's a lower-pitched audience groan than you usually hear.

I feel privileged to be here first. Yet I feel so alone.

People who think that correlation implies causation usually wind up dead.

I don't know how true this is but I read a long time ago that fighterpilots are more likely to get daughters. They never expained why.

I have been considering and reconsidering which of Sandi and Stephen is my favorite host of qi. I have determined it is more like who's the best late night American talk show host. David Letterman or Conan o'brien. They're both Legends.

What if it's women's football that's on?

Can anybody tell me what Sandi says at 2:23 after "marvellous. If one of them ..."?

All that talk of where sperm comes from is a load of ... ne'mind.

What if it is women's football?

Is it just me or did they stretch the video aspect ratio?

you can have some of mine! I have loads

Thats the first time ive seen that lady as a quest.

Adoption? Try enough times?

What is Sandi saying at 2:25?

All of these ways to determine gender rely on very small sample sizes and are not reliable.

Quick to mock Pythagoras, but... has anyone TRIED tying off the left or right testicle..? What if he's right? :P

Sandi perhaps touches on one possibility and that is that male chromosome sperm take longer to generate thus if you are trying to conceive with lots of regular sex then you will become more likely to have a girl as that's more readily left. This is according to midwives.

None of this even matters. Offspring sex is determined by the male’s gamete.

The sex of a baby is determined by the chromasomes of sperm that reach the ovum. So anything that connects the mother's activity or diet to the sex of the baby is bunk. Sexual position, bunk. MAYBE diet of the man, or something, might affect the ratio of X vs Y sperm the man produces. All the rest of this, bunk. But QI is still a fun show, if not a reliable source of information. 😀

Sandi lost weight

I could play with Ronnie all day long

We're really taking this from 56%? 😂

There's a long-standing traditional method that actually works reasonably well. Let's say your life's ambition is to have a son. So "Mummy and Daddy love each other very much" and you'll *probably* get a boy or a girl. If it's a girl you take it as a bonus and try again. Repeat as required.

A word to the wise - never answer the phone while in the act.

if boy sperm swim fast but die quickly, would lenght of the penis play a role? like, with a long one, the starting line is closer to the ovary than with a small one, so the girl sperm has less time to overtake them?

Oh excuse me,my old gram used to say" want a boy ....woman must initiate.want a girl....man must be the aggressor.... I see it true for all my life.

🤣🤣🤣

Phew, I didn't come first.

And this is the episode where the brilliant line about women comedians just talk to much from Jack

But the sex is decided by the sperm, so it's what the father does, not the mother!

I will never understand the appeal of Ronni's "dumb" routine.

Apparently a lot of athletes have only girls and I thought perhaps steroids could affect which spermicide are produced by shutting down the endocrine system

Never got why women had to diet when it is the men who determin the baby sex. Guys should be the dieting ones.

Who IS that brunette… hmmmm

Statistical oddities, not actual reliable facts.

My wife had Bran Flakes and bananas at least twice a day and we had a girl

This all is a severe case of 'correlation does not = causation' yet it's up being scientific superstition.

Here's an interesting fact for Mummies.... When a lady gives birth to a son...part of his DNA stays in your brain forever. It doesn't happen with girls. I think it's something to do with the fact our eggs are all female, if we could reproduce without men all of our eggs would produce girls. So a female sex sperm fertilising an egg seals the deal. But a male sperm fertilising an egg has to change the development of the blastocyst. (very early pregnancy conception.... Still just cells diving and multiplying) The two gonads grow inside the female to keep warm and her belly encloses them as ovaries. The two gonads in the boy push down lower and the belly closes off with them outside, as testicles to be kept cooler separate from the body. A basic egg has all of the information to structurally form a female shape...but a male sperm has to reorganise that blueprint, make things grow inside out. I'm sure that's the stage where sexuality is determined also, depending on which of the parent's orientations wins out. Anyhoo, somewhere in that male forming process, the mother's body has to adapt to be able to grow this baby boy, and that adjustment stays within that mother forever. It's why statistically, more miscarriages are of male babies, than girls. I guess a bit like a recipient's body rejecting a donor organ as it doesn't recognise it. More male babies are miscarried where the mother's female body doesn't recognise the male growing inside of her. With organ transplants they give drugs to the recipient to prevent the risk of rejection. Growing a baby boy demands that her body make a similar "drug" or chemical change within to prevent rejection. And to do that it has to take on an analysis of this male, in order to incorporate it onto her body's "OK" list. It's that anti rejection recognition that stays in the mum forever after. Clearly I'm no scientist and don't know the correct terminology to explain, so it's in layman's terms, but the scientific conclusions made a very interesting read. I think our body's are so clever, complex, bizarre, surreal, wondrous and surprising all at once! Like mind-blowingly-incredible! Did you know that if your heart develops blockages, that the heart will attempt to grow new extra tubes for blood flow to bypass the blocked piece! They reach out like skinny tentacles, getting longer, curling outside of the blocked area until it plugs itself into healthy tissue of the heart on the other side. Isn't that incredible??? Did you know that people with one blue eye and one green have two different DNAs??! One DNA is theirs...the other is their twin's! The twin that THEY absorbed whilst in the womb together! 😳 Just past the blastocyst stage where skin is starting to enclose the the developing foetus, it can often grow around their twin as well...so not just conjoined, but one actually growing around the other to incorporate both blastocysts into one person. Just simple cysts are fascinating! How the body finds an excess pile of "gunk" and wraps it up into it's own little ball to contain it, and stop it spreading. Things like that just blow my mind! 😊

This was an excellent clip. However, I'm very surprised that they would upload such common sense remarks in this current climate. I'm not even being snarky. I'm actually shocked.

Fookin' legend. A scientific explanation of why we short-sighted, short-lived, violent men generate more medals and massacres, but can't last long enough to satisfy anyone.

Why do complaints about the increase in annoying KZfaq ads get more reactions than substantive comments? Theory 1: Paid trolls? But why? Theory 2: Commissions for AdBlockers? Naw, too weird, but also unethical and ineffective. Theory 3: KZfaq wants profits! ROFLMAO. No theory: KZfaq is more and more annoying. Please tell me about a better video website.

boy sperm. girl sperm.. taste the same to me. thinks stephen.

I read somewhere that whoever the dominant partner is, that’s the sex of the baby. I guess with the cereal bit, if the man is working the woman can stay at home and eat all the cereal she wants, but a working woman might not have time to eat as much early before work

"How to conceive a girl or a boy"? Well yeah, there's not a lot of other options.

This is the, women aren't funny episode, a much better clip...

I feel sorry for Sandy's son. It sounds like she thought the idea was to avoid giving birth to boys at all... "So you don't want to have cream cakes just before?" I do hope I'm wrong about that.

How DNA Test so you can see if their boy or girl

All of these Theories are wrong. There is only one way a sex can be determined

"So you don't want to have cream and cakes just before". says Sandi, obviously thinking: why would anyone want a son? Stephen had to say: "if you want a girl", but it's so transparent that Sandi meant that sentence just in general; as is evidenced by her disparaging comments about her son.

Please we all know the kindergarten teacher decides what gender your kids are.😐

1:08 Sandi dropping some casual sexism. Edir: JFC, at 1:35 she goes full toxic