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.
viết bởi kelly 12 Tháng chín, 2003
See Butt Marks
Ass grooves were left from sitting on the coach all day.
viết bởi dwayne 12 Tháng năm, 2004