when a couch potatoes ass has grown so big that it has started to conform to the shape of the couch.
#1 OMG....look at that ass!!!! It is HUGE!!
#2 Yeah, look at that couch butt.
#1 looks like the cushions just suctioned themselves to her backside.
#2 Yeah, look at that couch butt.
#1 looks like the cushions just suctioned themselves to her backside.
by ZipItGood March 16, 2011
This type of Butt is so enormous that when it sits down the butt takes on the characteristics of a couch. When one is looking at it the butt is mistaken for a couch when there is no couch present. Normally it belongs to a whale of large stature.
by Mr. Homophobia June 30, 2023