Definitions by Zelmung

thrub 

To flirtatiously rub the belly button of a friend or potential lover for the purpose of touching them or making them laugh.

Annie: I'm not ticklish, don't even try.
Ted: How about thrubbing?
Annie: What's that?
Ted: -thrubs-
Annie: WTF THATS SO WEIRD
Ted: >:)

thrub by Zelmung October 3, 2011