A suprisingly large gruesome parasite that situates itself on the overhanging skin of a persons arsehole. It lives off the juices slowly secreated through the bumhole, and its lifespan it approximatly 7.6 years! Being harmless itself, a rectum-fish can however, cause accute discomfort to its host, if it has been sitting down for long periods of time, as this restricts it's oxygen supply, making it squirm.
Man: I gotta go to the doctors' later today, I've gotta a bitch of a Rectum-fish sucking out my guts.
by Mr.Pete December 3, 2007

That guys penis was sooooo huge that that rectum ripper tore me in two. I couldn't walk right for a week!
by willie989 January 18, 2010

by Andy July 18, 2004

by Online Mafia August 6, 2003

by MrMontana June 27, 2016

To be tricked, through any method, into clicking a link that takes you to a picture of a weightlifter's prolapsed bowel hanging from his rectum.
Ken't colleagues and friends grew weary of his countless efforts at forcing them to view the weightlifter's insides, yet Gilbert was successfully rectum rolled on several occasions.
by Kentisugly May 7, 2010

I did anal with the girl I met at the bars this past weekend and totally left her with a rectum dragon.
by Cunt Wizard December 10, 2014
