Top Definition
A depression in the cushion of a couch or chair formed by many hours of sitting. First known usage by Homer Simpson.
Don't sit in my ass groove! You'll mess it up.
po kelly Септембар 12, 2003
Ass grooves were left from sitting on the coach all day.
po dwayne Мај 12, 2004
Slobodna Dnevna e-pošta

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