Top Definition
The act of going behind a man (random or acquaintence) and jiggling his balls. This could be sneaky, out in the open, or an act of retaliation. No homo.
Man 1: What happened? Why do you look so surprised?
Man 2: Ho-Holy shit! Diaz just grindel swapped me!
Man 1: Oh.
by TheNester January 27, 2010

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