A picture of one's rear-end, with or without underwear. (preferably nice ones)

The act of extreme masturbation. You must "knock one out" whilst in close proximity to any of the following; Your mum, a nun, your boss, a member of parliament, George Michael. A person with capabilities to act upon catching you mid self-abuse obvisouly ups the ante. Ejaculation must be reached before your danger wank target comes (no pun intended) to investigate. The higher the chances of being discovered with one's pants down, pulling one's war face is obviously where the danger comes from. The more danger involved the harder (or softer) it is to complete the task in hand (snigger). The more dangerous the better. The chance of being arrested, pummeled by an angry father or having your hand severed by an arab's sabre means that you are a pro "Danger wanker."

Picture of somones ass, with or without underwear, Nothing over the underwear.

1. Simply a pic/photograph of someone's or your own posterior/buttocks. (Commonly used to solicit or accquire scintillating photos.)

2. a pic/photograph of loot/swag/plunder.

when you intentionally show off your ass in a pic or a video.

April 16th is national bootypic day, when you send this to any girl they have to send you one and they can’t say no

The day in which girls have to send a booty pic if asked for