A very broad word, often meaning to get with someone which ranges anywhere from merely dating, kissing, or making out with the person. Usually it does not involve sexual activity.
"Oh wow, Christine is so hot. I'd jam her any day"
A number that you call when you want to know the tempature in memphis
901 526 526 1
try it
To be retarded or otherwise mentally deficient.
"I can't figure out how to work this toaster."
"Dude, that's cause you're jammed."
kid: "I like your hat. Can I have it?"
you: "Sure"
<Later>
Your Friend: "Where's my hat?"
you: "It was ugly so I gave it to that jammed kid."
Has a very, very strange addiction to eating ice cubes & Google Feud