When any person is being annoying, racist, or generally unpleasant, you simply call them a Peepeepissboy. This denotes that they have made an error, and that if they don't fix it, they will forever be marked a Peepeepissboy.
Thomas: Haha imagine beingdepressed can't relate
Hannah: Stop being a peepeepissboy, it's not funny.
Thomas: Hey don't call me that.
Hannah: Shut up, peepeepissboy
Oscar: Hah Thomas is such a peepeepissboy haha
When sitting on the toilet in a public restroom. Someone who tries to look in to see what you are doing. Often but not always it's kids who are just curious. Peepweasels look under the door or partition, or stand outside and press their faces against the crack around the door to get the best view possible.
Man, I was taking a dump in the restroom at the mall lunchtime, and I noticed some little "peepweasel" looking at me through the crack in the door.