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.
بواسطة kelly سبتمبر 12, 2003
1 more definition
See Butt Marks
Ass grooves were left from sitting on the coach all day.
بواسطة dwayne مايو 12, 2004