The improper usage of the phrase "by accident". Started in the United States, but it has started to spread to other countries like a plague. A terrible, terrible, grammar plague.
Cleetus: "Hey Maude, this 'ere critter dang near made me spill mah beer on accident."
by Riley Krushane February 16, 2006
1. How you would type accidentally quick, especially in texting.
2. A common spelling error of accidentally
I think I spelled accidentally spelled accidentally as accidently
by Billiam Beaver March 14, 2017
An event; when one urinates or fecalizes prematurely to reaching an established restroom facility, typically staining one's clothes and causing much embarassment.

Typically, having shat oneself.
Billy: "Teacher! Clyde shit himself on the swing!"
Teacher: "No, no, Billy! Clyde had an 'accident'..."
Billy: "Nawp. He shat himself and flew right off that sumbitch!"
by Drew D'Jew March 26, 2004
"Mary, did you see those two cars accidenting?"

"Yes, I saw the whole thing!"
or
"Wonderful, the baby is Accidenting in his brand new pants!"
by TableFor6Please0814 September 21, 2016
n. A commonly used excuse with the intention of averting responsibility.
'accident'
Person 1: "I saw your hand down there and heard some noise, I call bullshit!"
Person 666: "It was merely an accident."
Person 1: "Oh, spare me your rhetoric, you know that your hand and arm didn't just magically spasm near my girlfriend's ass."
by (9+10)x2 = 42 | 42x10 = 420 November 7, 2016