An FFJ is a Full Fledged
Jerk -- not just a jerk at this moment because of something he/she said or did, but a jerk all the time; a person who doesn't learn from their prior jerk-
like actions or statements; a/k/
a a person who is either too proud or too stupid to stop being a jerk,...even for an hour. This person is a classic example of someone you can dress up, but you can't take them anywhere, rather
like a real
pig, the actual filthy animal. This is the type of a person who regularly hears, "You are such a jerk!" but doesn't care enough to do anything about it.
"That
guy is such an FFJ! -- He backed his truck into my
sister's car, and just drove away as he screamed filth at her for having her car parked in his favorite parking space! It was
Walmart's parking lot, not his stupid, ugly house!