When you are engaging in intercourse in front of a window and your friend is in a window adjacent from yours, and you both simultaneously "high five" your windows as if high fiving each other in person.
Dude I was doin Betty in the butt last night and Window Fived Mike across the way.
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 windowwank. Should I ever need an alibi I'm pretty sure the neighbours will remember.
Similar to Minecraft but for women of a desirable age with enviable skills in the art of wine drinking whilst engaging in craft. An educational undertaking where like minds share knowledge and alcohol.
The best thing about Winecraft is even if you drop a stitch your friends are too drunk to notice..