To lead someone on. Pretending you have interest/feelings for them when in actuality you don't.
Jack Jack'd the daylights out of her and she's still in recovery.
by The Oppa's Club June 7, 2013
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A gay dating app for men. Used by gay/bi guys for; hooking up with other men, men looking to date and/or looking for relationships with other men.
Ladies, if you go thru your man's phone, an he got an app called Jack'd on his phone, yo dude is gay/bi
by King_Ra187 December 3, 2015
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Verb- When you get an A on a major project or assignment without answering the essential question by using wordiness and flowyness.
"Damn Jack just got an A on the essay and used a completely different topic that we we're supposed to."

"It sounds smooth af, but where is the answer for the question?"

"We have all been Jack'd."
by Cool7048 November 20, 2019
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When you go to Jacks casino, and inevitably lose your most recent pay check.
"Doesn't Laurence still owe you 100 euros?" - Daniel

"no shit, but he got jack'd again. Maybe next month. " - J
by TheWordWizSwagFuck January 19, 2016
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To be ridiculously stupid and genius all at the same time.
-Doing homework ahead of time for one class, then turning it in to another, you just Simple Jack'd yourself
-Trying to scare someone back, when the person you scare is yourself, you just got Simple Jack'd.
-It can be applied to almost anything.
by Bumpy23 January 2, 2012
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