When you are having sex with a girl and your penis accidentally comes out too far and goes back into her asshole. She usually screams in horror.
Girl: AAAHHHH!!!!!

Guy: Sorry, babe. Assidents will happen.
by The Dersk April 16, 2008
Get the assident mug.
an accidental pregnancy resulting from anal sex.
g/f : my pregnacy test came back positive.
b/f : but i only gave it to you up the butt!
g/f : the dr.s said when you giz it can leak down and cause pregnancy.
by Lauren August 19, 2005
Get the assident mug.
oops, I had an assident.
by 46er September 27, 2009
Get the assident mug.
A voracious pussy-licker can sometimes make a butt-related accident, hence, assident:
When you're eating a fantastic snizz and your tongue slips in her asshole. Perhaps the word is better used when it's a dirty asshole.
As soon as said accident is made, it's good to play up the situation by using baby-talk:

Man, to woman, making cute-sy frowny face: "Baby made an assident".
by Davey C. December 14, 2007
Get the assident mug.
an accident involving one or more people being an ass
This guy was tailgating me for miles, it's no surprise we got into an assident.
by Ryan Taurant September 22, 2009
Get the assident mug.
When you wipe your ass and accidently touch your dirty anus with your finger(s).
Harold wasn't paying attention in the bathroom and had an assident.
by Michael L. Johnson March 30, 2004
Get the assident mug.
The food you eat that effectively causes your ass to burn when taking a dump.
Foods that cause this are normally, but not limited to:
Buffalo Wings
Curry,
Mexican Food,
Indian Food
These buffalo wings are Assid, but I love em anyway.
by Mad Hatter Lee November 9, 2006
Get the Assid mug.