When you get absolutely fucked over by someone's incredible amount of luck.
Person 1: how did I lose I had 3 aces after the flop!?

Person 2: My full house of 2s and 7s beats that, bitch!

Person 3: Oh man you just got J Macked!
by DouganPH October 6, 2016
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A name denoting ones fondness of the subject.
"Aiite J-Mack, how are u bruv?"
by innitbruv May 14, 2008
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to participate in all out retarded crazy making out / sex
"Dude, did you see B.Role and Kelly on New Years? They were freakin' j-macking it all night long"
by Ryan&Chris May 19, 2007
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i j-macked the shit out da hoe!or been there done that i J-macked dat trick last night!!!
by B easy08 March 24, 2008
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LEAVING A POOR SCHOOL FOR A BETTER SCHOOL. USAULLY FOR ATHLETIC REASONS. A DFW TERM.
I HEARD 2 SOPHMORES WAS NAMED ALL DISTRICT AFTER J MACKING TO ANOTHER HS
by THE DUB INFO October 27, 2023
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