Top definition
To wank proudly out of an open window and ejaculate onto the road or stunned passers by.

Bonus points for maintaining eye contact with a neighbour while slap boxing the one eyed champ!!
I'm in a rather dirty mood tonight Claude, infact I'm going to have a quick window wank. Should I ever need an alibi I'm pretty sure the neighbours will remember.
Get the mug
Get a window wank mug for your Facebook friend Bob.