Ok, here's an adult post

A guy I worked with back in the 1970s when we were in late teens claimed to have done that to a similarly aged girl staying overnight at his mum's where he lived at the time, he knew her, crept into her room the following morning, she was asleep nude under the duvet and he thought it would be funny to fetch ice cubes from the freezer and do just that . She woke up with a starts and didn't think it funny .....

I think there was an incorrect belief that someone ODing could be brought back with ice up the butt. That's as close as I can get to your post. Probably not much help.

Yes they do, never much cared for it personally

I'm sure someone has. Wouldn't be my choice, though.

I think that sounds terrible

Think it’s better used around it rather than in it.

Not in my experience.

Icecubes where where 🤭

Anything is possible:

Yes, just touch the lips

Yikes....on pussy however....different story!

Charlie sheen,to keep himself awake for a film scene,shoved ice cubes up his butt ( he admitted this in a recent netflix documentary!!!)