V.
Present participle of belonk.
Belonk
1. The art of touching in or around someones rear end when not asked to do so.
2. Nonconsensual rear cleaning.
Fred: Hey Jeff, wanna go ass belonking this weekend?
Jeff: What the fuck are you talking about? Thats disgusting.
Fred:....
Jeff: Just kidding you butter fuck! (Belonking ensues)