Top definition
The act of sending ones housemate out to Tesco's to buy chocolate, muffins and wine in order to masturbate, naked in the middle of the living room, hoping that you can finish and redress yourself before they return home.
Margaret: What did you get up to last night?

Glynis: I had a dangerous wank whilst Brian popped to the shop for a pint of milk and some fishermans friends.

Margaret: Ooh, that sounds like fun.

Glynis: Yes, it was delightful.
by slapyourstick May 27, 2011
Get the mug
Get a Dangerous wank mug for your cat Riley.
make sure you are prepared. and then when you feel ready start masturbating in your room. scream "mum".

then the fun bit...

you have to ejaculate before you mother reaches you room or you have to do the whole sequence over again.
got back from college the other day.

was sitting at home bored so i thought i would have a dangerous wank
problm was i lost and my dad was the only one at home.
by nathan skerry November 29, 2007
Get the mug
Get a dangerous wank mug for your brother Manafort.