1 definition by minispecs123

Short for "Jealous as fuck" or "Jelly as fuck", used in instant messenger and other online social media websites. The word is used to show your jealously of what your friend has got or is doing.
Friend 1: hey man I got the new call of duty game 3 days early!

Friend 2: really?? dude i'm sooo JAF!!
by minispecs123 September 14, 2011
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