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.
While having sex with your girlfriend from behind you call up a friend and have him come to your house and take over for you without your girlfriend knowing, then you run around to the windowoutside and wave to your girlfriend.
Taylor: "Dude last night i gave my girl the david coperfield, it was great"
Alex: "STOP LYING YOU DONT HAVE A GIRLFRIEND!!!"
Taylor: *crys*