What one says when they do something intentionally and gets caught.
Jarret was mad at his mother for throwing away his adult video collection so he smashed her grandmothers antiuque lamp worth 7mil she had inherited with a golf club. When his mother returned home and asked him what happend, he responded,
"Oh me and the guys were heading out the door to play golf and I bumped into the lamp ON ACCIDENT"
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."