Be Less Polite
by Nick Douglas from Lifehacker on (#4S11R)
The nicest thing you can say to your friend is "Fuck you!" Not when you're actually mad, but when you're goofing around and they just got you good, and you're acknowledging that yeah, you're owned. That "fuck you" says "We are in a circle of trust and intimacy, and because of this we do not need to be polite."