1. Hanging out playing music
2. Generally having a bit of a laugh
3. A weed smoking game where you listen to Marley's song Jammin and have a toke every time he says Jammin. You gonna need a bigger spliff white boy, he says it a helluva lot!

1. We were jammin since Steve took his guitar and Agyness brought the washboard.
2. We were jammin, 'twas fun!
3. We were playing Jammin and my seester puked all over herself, and when Dereck tried to move her she puked on him then at hospital she came too and freaked out so much they put her back to sleep. She can't take deh weeeeeeed.
by Fox JK January 20, 2009
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danielle: safe cuzzi, wot u on?
rhianne: nuffin much..jammin
by regggw4th November 20, 2003
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Verb— to be absolutely rocking out.

Adjective— to be an object capable of causing you to jam out
Verb: Wow, this party sure is jammin’.
Adjective: Have you heard the new Old Town Road? It’s totally jammin’.
by jizz guzzler mcgee July 19, 2019
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Couldn’t care less
“I had an apple today”

“Yeah sweet I’d be jammin
by beniw June 30, 2022
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Casually playing an instrument(usually a guitar) with another person.
I want to have a jammin session with Jimi Hendrix.
by Jibi Hendrix April 2, 2005
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Jammin (v.):

1. Continuing to have sex after coming.
2. Having sex despite also having a less-than-hard on.
"I'm pretty sure she has delayed orgasm, because I lasted almost an hour and still came before her, so I just kept jammin for another 20 minutes."

A: "I know for a fact that that 83 year old guy has ED, and yet he continues his porn career without the aid of Viagra or Cialis. How does he do it?"

B: "Dude, he jams those teens like crazy"
by Yar! A pirate! October 24, 2010
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another word for cool or awesome or nice
"yeh, i went snowboarding on holiday"
"omg thats jammin"
by kimberly =] :) March 1, 2009
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