The result of improper or hasty removal of one's pants. Slack-jam typically occurs when the shoes, especially lace-ups, are not removed prior to removal of the pants.
1. In his haste to slip into something more comfortable, he required the help of his room-mate to extricate his shoes and feet from his pants in a rather nasty example of slack-jam.
A nut sack jam is an uneducated, dirty semi truck driver that has no clue how to maneuver their truck in a parking lot.
An idiot truck driver pulls into a truck stop or parking lot and it takes them an hour to get to semi backed in. These truck driver typically have unnecessary hood mirror.
Possibly the funniest thing you can do to a friend when they are sleeping. You stand up and jiggle your testicals in their face and masturbate at the same time. Then you ejaculate all over their face and up their nose.
Kevin: Dude, you got the best jamble sack last night!
Ben: By who?
Kevin: ME!!
Ben: "*punches Kevin in the face*
"Jamalang Ab-ack, a tung, a sack!" has the meaning of when you are in so much pain you dont know what to say.
"AAAGGHHH!1 HHAHAAAAAAAAAHGJKLHKJHLGG HH UUUAAHH AHHHH I CANT FEEL MY LEGS AAHH JAMALANG AB-B--B-B-AACK! A-A TUNG A SACK!!! AAAAAAAAHHHH!!"
"What"
"You know, Jamalang Ab-ack, a tung, a sack! When i dont know what to say when im in so much pain, you know?"
"Why is it all of a sudden you can speak properly?"
"I dont know. AAAAAAAAAAAAAAHHH AAAAAAAH AHHHHH AHHHHHHHHHHH"