Top definition
Anal bifida is an unbelievable defect caused by the incomplete formation of the assholium during proctogenesis. If the anal aperture is freakishly flabby, some portion of the rectum may cantilever like a festive pink party balloon beyond the anal chasm.

Anal bifida is one of the bifidas.
She is gorgeous despite her anal bifida.

Anal bifida: We will find a cure!
by rod sewert September 01, 2010
Happy St. Patties Day!
A healthy treat.
Also paralized or lack of anal canel.
Also too much anal sex from oversized ramrods resulting in internal heamorrage.
An all round ass pounding.
Charley forced his gigantic RAMROD up by bottom yesterday, Twas great!

Alex missed my sniz and plugd my arse, total anal bifida.
by Alex,Nicole October 06, 2008
Happy St. Patties Day!
when you fuck a girl in the ass and pull out it makes her butthole pucker out
man i was at this party lastnite and i had sex with this chick so hard i gave her anal bifida
by koffin robber August 17, 2010
Happy St. Patties Day!