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."

A verb that describes a person who has a fedish for turtles. A "zerr" has a slight obsession with tortises and turtles. A zerr may also posess some physical features of a turtle.

Zerr means bullshit
Its a slang-word originating from Ålidhem, a suburb in the east parts of Umeå, Sweden.

Its also used as a verb (zerra)