Has anyone else

Would have gotten me in trouble to do that. It can leave watermarks on the mattress and it is stupid as a trick to do it.

No! She would have beaten me up. Then both my parents would have too. Then I would have to wash and dry her sheets and remake the bed.

My roommate in college took a piss I to a frisbee, left it outside in the winter, and in the middle of the night he popped the frozen disk out of the frisbee and pushed it under someone else's door. They woke up thinking one of them had taken a leak in the middle of their room.

I'm glad they never found out it was him, or I'd have gotten blown back by proximity.

Put their hand in a bowl of water

No.. Cos it wouldn't have been our source of comedy in our house!

No, but my older sisters sometimes used to do stuff like that to me 😟