When you're awake in the bed next to a sleeping girl, you masturbate and release it all over her. The key here is to make sure she sleeps and does not wake up until you have left the house as she will be shocked and confused about what is on her. Particularly good after a night of drinking.

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."

Similar to a Wet Willie but instead of licking a finger and placing it in someones ear, you place the wet finger in a vagina.