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1.
loose woman, easy lay
Yo, this club sucks! Lets sniff out some sloppy tuna down in the carboards!
by Fadmo April 22, 2008
 
2.
1. An interjection reflecting anger, physical pain, or surprise.
2. A euphemism for bad sex.
1. Sloppy Tuna! I just stubbed my toe!
2. Oh man, I just had some real sloppy tuna with my ex.
by Commodore H January 10, 2012