The act of having anal sex and during the removal of said cock pulls out a shit shark on the end
Tito: Damn homie are you Spear Fishing For Shit Sharks?

Me: Hellz yeah you know it look at this extra large shit shark i caught!

Tito: It looks angry!
by Chin Nutz September 28, 2009
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“Shit’s fish” comes from the phrase“pussy smell like fish” Any shitty/bad situation or thing. Anything negative in general. Synonymous with “Shit’s Ass” or “Fuck”
person 1: my parents said I can’t go to the party this weekend, I need to stay home and do chores!

person 2: shit’s fish, fuck it!
by Jsport18 September 7, 2019
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