The most common spelling of "could've" in United Kingdom of Great Britain and Northern Ireland, Ireland, United States, Canada, New Zealand and Australia. It really doesn't mean anything, but it's a bit like myths and urban legends: people are just too lazy to think whether it's true or even plausible.

Abbreviation for “Dude Arguing Online”.

Plural: “DAOs”

Coined by Twitter user @karakittel.

a misspelling of the contraction could've

How the uneducated say 'could have'

A common misconception among idiots who go by their ears rather than their brain. The real way to say it is "Could HAVE", i.e. "I could HAVE gone to the party", rather than "I could OF gone to the party".

It's a common mistake, generally caused because the phrase "Could have" is said so quickly that it is conceived as "Could of", but that's wrong.

"Should of" is the exact same but slightly less common mistake.