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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.
Up jack by Thadeous December 10, 2008

tore up jack 

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.
tore up jack by Little Retard November 5, 2005

Stand Up Jack 

The ultimate source for knowing anything about music.
Yo, that MTV isn't very Stand Up Jack. It's more like, whack.
Stand Up Jack by John McKay April 6, 2004

Jack up your heater

Finger or jacking off to make you warmer!
You should go jack up your heater to stay warm!

Jack Up Your Shit Box 

To be beaten severely about the head, face, body etc. i.e. "Jack up" from
being jacked up combined with shit box
"I will Jack Up Your Shit Box!"

"Tony landed one punch on that guy and really "jacked up his shit box"
Jack Up Your Shit Box by Morbog September 27, 2004

Hit Up My Jack 

Generally meaning cellular device or sometimes even the home phone. Origins unknown, but sources believe that term came from the magicJack.
Average White Boy: Yo, you good?
Homeboy: Im about to pick up.
Average White Boy: Aight, good looks.
Homeboy: Give me ten, then hit up my jack.
Average White Boy: .......(Astonished In Amazement)
Hit Up My Jack by Good Samaritan. October 29, 2010