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.
লিখেছেন- kelly 12 de সেপ্টেমবার de 2003
See Butt Marks
Ass grooves were left from sitting on the coach all day.
লিখেছেন- dwayne 12 de মে de 2004