The practice of full-on, extreme searching for friends to add on Facebook, or other online social networks. It is especially appropriate when the search becomes obsessive in nature or solely for the purpose of boosting one's friend count.
e.g., a status update reading, "Jimbo is up too late facemining for old classmates."
Posting to Facebook only to get a specific reaction from a specific person. Causes nearly all Friends to say, "Huh?", but one particular Friend to say, "Oo. I know what that's about." Not always negative. Not always positive.
Also known as ballsmacking.
This is where a guy, or several guys whip out their floppy ballsacks and teabag someone, and smack them in the face with their balls.
Oh it was horrible, last night I passed out and woke up to my boyfriend and his mates smacking my face with their hairy balls!
Dude last night we totally went faceballing and did it to some idiot on the street, should have seen their face!