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1.
One of the greatest jam bands ever. Originally Jorma Kaukonen, Jack Casady and Will Scarlett. Legend has it that they wanted to call the band "Hot Shit" but the record comapany balked.
Jack and Jorma were awesome at the Hot Tuna show last night.
by Urban Observer May 28, 2007
 
2.
Slang term for the vagina, because of its temperature and smell. Also known as pussy, snatch, or ginch.
That girl's such a slut. Take her to dinner and you'll be balls deep in hot tuna by nine o'clock.
by Blackwolf Morrow September 29, 2005
 
3.
take a diaria shit on a girls chest and then jizz on them
yo Griff the hot tuna u gave was great!
by Nick Leone August 29, 2006