Things that are actually pretty weird when you think about them?

Why women who spend a lot of time together their periods start to sync

Is there a female in the group that will lead this (as a few times I’ve noted that flat mate/colleagues fall into my pattern) maybe just coincidence

But why does it happen what is the reason behind it. Is it so the male we are mating with won’t mate with the females we are close to (or less likely to)

Wallpapering. I mean, it's glueing pieces of paper to the wall. Always seems weird to me when I think about it abstractly.
Distressed people in courtroom scenes on TV being offered a glass of water, like that's going to fix anything.
Scenes in TV programmes where a house has been burgled always showing the pictures askew on the walls, like burglars go around doing that before they make off with their swag.
Ice cream desserts that come with cream as well. What's the point?

@SoupDragon

On the whole, they don't do it for fun

Do we know this? I mean, biological urges have to be fun don't they? Even going to the loo, or scratching an itch are pleasurable, when you really need to. I can't imagine all the animals are doing it because they feel they have to.

@MadameBlobby

How do you think animals know how to reproduce? Do you think they've all had it explained to them?

@alibongo5

Eating. So often. If I'm not eating, I'm clearing up, or thinking about what to eat next. Why do we need to eat so often

We don't. The human body gets hungry at the times it knows there will be food available. It's evolutionary; those early humans who said 'Oh, is there grilled mammoth this afternoon? Not for me, thanks...' died out.

You can train your body to get hungry at different times. It takes less than a week. So, for example, if you decide from now on that you're only going to eat at 6pm, and you do it, you'll only get hungry at 6pm, after a hideous few days of hunger at breakfast and lunch time. You might feel like 'Mmm, it'd be nice to eat', but you won't get the 'I'll faint if I don't' feeling. It's all to do with ghrelin.

Yes sex is very strange. How did the first people on Earth know that they had to do it in order to produce more people?! I’ve only ever had sex because I knew about it. I can’t imagine I’d have worked it out if no one had told me?!

Why do we have a 3 dimensional belly button but my dog and cat only have a small flat scar?

When I watch TV I often wonder who put the light bulb in that room.. Or what did that person last eat... Who is in that car.

Ears. I think ears look really strange. To me they look like odd appendages that shouldn't really be stuck on a human being.

Have you ever watched when a willy is going in and out of your fanny... Imagine the scene he's on top, you look down.. Its bloody strange sight.

I started getting chin bristles at about 35 or so i think. Lovely

It happens to men, too, but the hair comes out their ears and noses, what my father used to refer to as "Coot hairs." As in, you only see them on old coots.

And this is interesting Re fish.
dtmag.com/thelibrary/reef-fish-colorful-science-behind-beauty/

@JJsDinerWaffles a combination of anatomy (depending on what sensors they have in their eyes), and practical investigation (you can test those cells on different wavelengths of light to see which they respond to). Many animals can see into the infra red, others sense ultraviolet, for example. This article talks more about it: www.sciencealert.com/birds-can-see-uv-light-now-scientists-can-show-us-what-that-looks-like

Eating. So often. If I'm not eating, I'm clearing up, or thinking about what to eat next. Why do we need to eat so often?

Concerts. I find it beyond bizarre the thought of having to explain to an alien that we go and stand around listening to other humans bellow at us, but some people are better than other people at this noise making.

Hair only growing from certain parts of our body, I understand why but it's still weird, and that it just keeps growing from our heads, why not just stay at a certain length like most mammals

Yes, and how it starts going wrong as you get older. Like, why don't all my eyebrow hairs know they're eyebrow hairs any more? They think they're head hairs, and just keep growing.

On the subject of hair, I marvel at the dog, who has seams, like a cuddly toy. You can see, especially on the chest, where the two sides were sewn together, and where the front was sewn onto the two sides. It's like how I can see the knot in my belly button, but on a bigger scale.

@JJsDinerWaffles

Rods and cones!

@joanna183

Yes - periods in a neat and portable shell.

Not read the full thread but for me it’s earrings

Why are things dangling from our ears through a hole made by a needle seen as decorative? And normal?

[quote SleepOhHowIMissYou]@joanna183 some animals can see different colours. We are only capable of seeing our own spectrum and it's impossible to imagine a different colour as we have no way to perceive it!

Also, some animals use radar, pretty weird![/quote]
Not to be dim but - how do we know animals can see different colours from us?!

[quote SleepOhHowIMissYou]@joanna183 some animals can see different colours. We are only capable of seeing our own spectrum and it's impossible to imagine a different colour as we have no way to perceive it!

Also, some animals use radar, pretty weird![/quote]
Oh wow! Never knew that. Thanks for educating me.

Also on the egg theme - are they just chicken periods?

@joanna183 some animals can see different colours. We are only capable of seeing our own spectrum and it's impossible to imagine a different colour as we have no way to perceive it!

Also, some animals use radar, pretty weird!