1). A phrase uttered in dismay over losing a race in Mario Kart.
2). An insult which cripples anothers self respect, as the victim is haunted by images of fucking douches.
1). You Douchefucker! You keep getting blue shells in second place!
2). Girl: Are you cheating on me?
Guy: Yes, why wouldn't I?
Girl: You Douchefucker!
Guy: AH! Do I really have intercourse with douches?