a person or persons that's IQ does not excede 45 who can't spell imperfection and makes sentences like the following:

" Brad and I were on lunch BREAD.."

notice the bread. The bread that doesn't belong.

It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.

meaning your a "dumbass" or, your " full of shit", yellow bus riding

Stupid-ass way of saying dee-dee-dee.

In the terms of Carlos Mencia, a retard.
Or, an expression of retardation