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.
On the way to work, I witnessed a car assident caused by someone texting. The assident caused traffic that inconvenieced thousands of other people. Truly an accident caused by an asshole.
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".