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When at least semi-experienced musicians get together and pull songs out of their ass, working all together non-verbally. Almost always involves hilarious bullshit lyrics.
Good jam sesh last night man, way to pull that riff out of your ass
by bassjesus March 19, 2014
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Nov 23 Word of the Day
A massive dump that takes 10 to 15 times to flush.
After Thanksgiving, I had to Take a Trump.
by JRBIV December 11, 2019
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A slang term used by douchebags to describe a jam session. Typically used by shitty/non musicians.
Hey man, wanna get together tonight and have a wicked jam sesh?
by JayDoopy April 01, 2019
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Subconsciously dancing to a song then noticing that others are doing the same, which only makes the group jam more enthusiastically.
The Black Eyed Peas can usually entise a jam sesh.
by ahhhsuraah January 19, 2011
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