The phenomenon that takes place when one takes a hefty dump but the feces slips straight from one's hole down the plumbing of the toilet so as to be completely hidden when one stands up to inspect their work.
"Dude I just took a massive dump but when I took out my phone to send you a pic it was another copperfield, so I sent you pic of some smegma instead."
Usually occurs when using an excessive amount of TP after taking a number two. Upon wiping, gravity and wrist action quickly pulls a clean section down over the shit stain thus leaving the wiper with the illusion their ass is now clean.
when you are getting a girl from behind and you pull out and have your friend get back in so she thinks you are still going and you go outside the window and wave to her
When a guy is fucken a girl in the ass and pulls out and spits on her back, making her think he just came, and then when she turns around he shoots his load in her face.
Executed in the canine position where one spits on the woman's back leading her to believe the man has had a happy ending. When she turns around for a cuddle she just finds herself standing in the rain instead.