This very painful thing happens when you slam the door, unaware your penis was there. And you scream in pain.
Innocent guy: *walks to the door Innocent guy: *closes door*
Innocent guy: AAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Innocent guy: *mah dick fell off Innocent guy: *dies from his penis stuck in a door*
1. Waking up in the morning with your penis up your butt, normally with morning wood.
2. A karate move in which you drop kick a guy's penis from 3 feet in the air, sticking it up in his butt.