The act of punching in the face, knocking someone out, or hurting someone in another manner
Coach Paffenroth during film session: What are you laughing at Egan?
Egan: Mondo's Tattoo of the Incredible Hulk
Coach Paffenroth: You think thats funny... (break clip board over knee) I'll jack-u-up!
2π 3π
An "up jack" is when you ejaculate into your own face and rub the semen into your nostrils.
You can up jack someone else by grabbing their penis and causing them to ejaculate into their face, at which time you rub the semen into their nostrils.
Oh man, I up jacked so much last night that everything still smells like my seed.
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mutual masturbation between a male and a female
"yeah me and tina was jacking jill up the hill last night, and she made it all the way to the top, and I came right right after her"
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A stupid manuever made in a car by a driver that causes major body damage when an accident occurs.
That guy really tore up jack on his car. when he drove off the road.
7π 2π
The ultimate source for knowing anything about music.
Yo, that MTV isn't very Stand Up Jack. It's more like, whack.
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Used commonly in bridal TV programmes to describe adding accessories to enhance the look. When a bride finds a dress that she likes, the consultant may offer to jack her up, meaning to add all the accessories like tiara and veil so that she can visualise how she may look on her wedding day.
Bride-to-be: I love this wedding dress.
Consultant: Would you like to see it jacked up?