The act of annoying a dude so much so that it is the equivalent of getting one's balls flicked.
"Dude 1: Did you ever follow up on that TPS report?" "Dude 2: You just freakin asked me last week. back the eff up!" "Dude 1: Yeah, man, I'm sorry to have to flick yur balls on that, but the boss is riding me on it" "Dude 2: Oh I gotcha, that's cool. did you check the badonkadonk?"
When a man's significant other wants to experiment with new arousing techniques. The Tanzanian Ball Flick consists of the female (Or male) giving the receiver head, once the receiver has came in the other's mouth, they then spit it onto the receivers tip, then flicks the shaft to catapult the Jizz, like a sport.
"My boyfriend asked me to try something new so i gave him the Tanzanian Ballflick! I hit him in his left eye and a little in his mouth and nostrils!"