When a gentlemen offers to dry hump a girl's ass on the dancefloor when no one else is willing to. An act of true selflessness, primarily aimed at raising said girl's self-esteem.
I felt sorry for that girl last night, shaking that ass all night without a dick to park it on. So I gave her a mercy grind.
by Baby benz secretary July 5, 2009
Get the Mercy grind mug.