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

by Andy July 18, 2004

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 Online Mafia August 6, 2003

by MrMontana June 27, 2016

Alan: Was that alright for you?
Eric: Orrr nooo your such a rectum ruiner... i'll be shitting for days!!
Eric: Orrr nooo your such a rectum ruiner... i'll be shitting for days!!
by Eric The Bandit January 3, 2012

by Jara42274 March 13, 2018
