When you want something and you don't have any money for it.
Jack: Oh my GAWD! That xbox cost $99! but i only got 20!
Joe: That sucks, you can borrow some off me.
Jack: thanks joe, can i pay you back in Invisa-Bucks?
Joe: F**k you....
The male equivalent of the "sexy mirror pic" resulting in attention from girls, look as much of a douche/jock as possible.
Jim: Wow he is flexing his muscles in a tight wife beater to get the girl's attention....
Rob: Wow he took a Douchebag Pic.