anal fissure 

The breaking of the skin around and inside the anus, generally caused by the skin being stretched too far. Some bleeding may occur as a result.

Anal fissure is typically caused by sexual acts which involve the insertion of anything large into the anus. Anal sex alone can cause anal fissure, though this is highly unlikely if enough lubrication is used (and, if the penetrating partner is careful).

It is more likely to occur during sexual acts such as fisting.

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anal fissure by atomicblue February 11, 2009

Anal Fissure 

When an ass crack gets open sooooooo far that the tissue of youre anus rips, enabling lava to eject from ur anus.

Oh shit.... My anus just fissured (anal fissure)

Anal Fissure by Fissured January 26, 2007

Anal Fissure 

An anal fissures, much like AIDS, is most commonly found in gay males having sloppy and sometimes unprofessional sex. It commonly occurs when ya take it in da bumhole without having a plug in prior or without the use of lube.

Me and Josh got so hot and bothered we both had Anal fissures in less than an 30 minutes!

Anal Fissure by Dinkiedoer December 9, 2021

Deepwater Horizon Anal Fissure Event

While conducting anal sex, the pressure buildup of digestive gasses are much stronger than the inserted object's (penis, butt plug, baseball bat, etc.) friction seal and increased so much from the repeated pumping and agitation, that it causes an outwardly explosion of digested mass - typically diarrhea and gasses - all over the anal sex participant and surrounding surfaces; evocating a similar result likened to Deepwater Horizon.

Yo man, I took Mary to Taco Bell last night then back to my place for some loving. We tried anal for the first time and idk wtf happened but one second she said "uh oh" and the next second her anus exploded multiple streams of diarrhea all over me, the bed, floor and dog - I don't know what else to call it other than a Deepwater Horizon Anal Fissure Event.

Deepwater Horizon Anal Fissure Event by hazeyez October 16, 2022