Also, what if it wasn't clipped short. Instead, you could grow it out a little to have a built in baseball cap

https://spykids.fandom.com/wiki/Thumb_Thumbs

Life would be different if we pooped out of our mouths like a sea cucumber.

We'd probably fight more with headbutts than with punches. Boxing would be cray. Safety equipment probably would be different.

I would say OP hit the nail on the head here. It would be different.

Hmmm make it a big toe nail so it gets yellow and thick and accumulates cheese underneath so I can scrape and eat on the go.

Those nail clippers are going to be huge.

Magpies wouldn't feel so smug that's for sure.

Amogus

Showers, barbers, and fights will all be different.... As will clothes, probably the skin colour of our faces. Our digestive systems might be different (from consuming nail stuff during famines). Our vision may be different.

Torture would be different. Gender, because we'd likely all paint our nails. Tool use might have different origins. We'd likely move different, and perhaps have different neck muscles and bone structure.

Basically we probably wouldn't recognize the new society. It would be alien to us.

Nail salons would be booming

Natural helmet

Imagine having a giant ingrown nail on your head. Yeah, no thanks.

Nothin a bit of phenol couldn't take care of.

...well, maybe a lot of phenol. And a crowbar.

Kryten?

Would hair nail thinning or balding still exist?

What would that look like?

Do you think we’d get sunburn under the nail?