To go into a stealing frenzy. From the word jack (as in to steal). Literally "stealing mode". Often yelled as one steals something in a very obvious manner.

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"Jack Mode!" *runs off with object*
by n00bdragon December 7, 2004
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When you're so angery that you could be considered a possible homocide offender.
Comes from the saying: Jack's got the key to the gun case. Wanna see?
I was in Jack mode when Daniel's project got a higher grade than mine.
by darth_eowyn September 27, 2006
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The sexual act in which a man stradles his female parters face (facing her feet) dropping his testicles into her mouth to suck. At the same time jacking his cock until he shoots streams of cum towards her pussy while she is getting head by another female.
Dude, My girl surprised me by letting her freak friend join in while I tea jacked the fuck out of her. Her friend was eating her pussy while I jacked my cock until I shot streams of cum all over her friends face. I call it Tea Jacked, ala mode!
by DSatch1 December 30, 2010
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