smacky jack

Smacky Jack is the act of shooting heroine into a vein in the penis just before orgasming. The combination has an overwhelmingly explosive then soothing effect.

Wow, I tried the smacky jack for the first time... and it was EXTREEEME!!!

by Loube June 27, 2006

jack nut

a insult usally directed towards a pricish person. Possibly made up while rambling anger towards a person.

God dammit! Ur such a fucking jack nut!

by PoniesArntUs April 7, 2009

jacked to the bone

The act of being so overly joyed that it sends shivers down your spine, which is made of bones.

Yeah, dude, I was so jacked to the bone when he called me up. It was awesome.

by al (: February 25, 2009

jack bag

n. A term formed from the better sections of the terms "jack-off" and "douche-bag". Refers to a person who generally exhibits the traits of above terms, usually at abnormally high levels.

"Hey jack-bag, for the last god-damn time, get your hands off my sandwich!"

by Buck Stuck February 4, 2004

Jack Pack

A Jack Pack is pornographic material that is snuck into a jail or prison that is wrapped in plastic for repeated use. The possessor of the jack pack can lick the back of the plastic wrap and stick it to the shower walls while the prisoner masturbates. The possessor can either use it for themselves or they can rent it out to other prisoners for items from the commissary.

Bill: Man, I've been locked up for 14 years and I haven't gotten pussy since. I really could use a shower and a jack pack.

Tom: Hey there guy, I've got a jack pack; you can have it for the night for a can of tuna.

by Gene Wonka March 27, 2010

Jack Whacking

It's when you crush up a whole bunch of Adderall and mix it with some silky smooth lotion and or Vaseline. Then apply it to your penis with strong strokes. Soon you will have the hardest, biggest raging boner ever possible making you able to bone what ever you want all night!

Barbra,"my boy lasted all night last night and his dick was much thicker than normal,"
Debra, " i bet he was jack whacking before"
Barbra, " ya i bet, he normally comes as soon as my mouth touches his dick."

by Jack Whacking Bro July 16, 2010

jack-knife

a semitrailer truck accident where the truck portion folds backwards so that it resembles a jack-knife

I realized I had to take a detour when I heard about the delay caused to a jack-knife on the freeway.

by The Return of Light Joker October 31, 2011