n. A fart produced while sitting on a couch or chair that vibrates the couch, specifically in such a way that the other people on the couch or in the room feel it in their behinds.
I was sitting with my brother and sister and laid a couch-rumbler; my sister yelled, "That's gross!" and left.
by Hoof Arted March 31, 2006
Get the couch-rumblermug.