1 definition by Laza

Top Definition
Common acronym used as an insult towards guys. The true meaning of JF is top secret, but in general applies to any player, jackass, bonehead, jerk, or piece of crap boy that you have had unfortunate dealings with.
"So then I found out he said the exact same thing to two other girls."
"Ew, what a freaking JF."
by Laza March 12, 2007
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