A man bends a woman over and does her from behind, then pulls out and spits on her back, making her think that he has discharged his load. As the woman turns around to congratulate her male, he skeets his man juice onto her face

While having doggy-style sex in a dark room, you switch with a friend without her knowing and then exit room and wave to her from her window

When the penis slips out of the middle hole in a pair of underwear boxers, either on purpose or accident; most likely when erect or after masturbation

When you are about to take a shit, it makes air contact and is just about to drop out, but then it gets scared and goes back into the hole.

When going to use the restroom in a public facility, looking in different stalls (peek) to make sure that the previous occupant has flushed the toilet (boo).

reach into your trousers, grab your bag, push the testicles back and collect your excess ball skin in your hand. pull the bag skin into clear view and show it to your friend. say "buddy, check out my excess ball skin" (give a little smile) then just as they are about to turn away, release one of your testicles into the loose skin and yell "PEEK-A-BOO" call them a faggot and kick them in the ass 6 times and ridicule them for being so gay for looking at your junk.