1 definition by hottiemchottpantsass

Means 'awesome' or 'great'. Often shouted, pronounced something like, 'JAAAYYYUM!'
An example of the word jam:

Person 1: Dude, I just saw Chuck Norris in Wal*Mart!
Person 2: JAAYYYUM!!!
by hottiemchottpantsass November 12, 2009
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