(n)

The act of rubbing two unwashed vaginas together in a sexual manner.
Olga and Bethany were horny even though their water was shut off, so they decided to Tuna Fish Sandwich eachother.
by One Twenty7 January 22, 2011
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When two girls are interested in each other and want to touch boxes scissor kick style, but want to be discrete about it. AKA calling it Meeting at the Y for a fish sandwich.
Girl #1: Man you smell so good I bet you could really go for a fish sandwich right about now.

Girl #2: Let's meet at the Y for a fish sandwich.

Girl #1: Agreed I have been craving fish all day and you smell delicious too.

Girl #2: Agreed.

by Fish and Chips February 2, 2008
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From the blues classic - slang for sexual availability.

"Free tonight?"
"I'm your tuna fish sandwich."
"I'm your tuna fish sandwich, spoon me on your bread.
I'm your tuna sandwich baby, best to eat in bed."
by Monkey's Dad February 20, 2023
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When a female is discharging from an STD, (preferrably white discharge) a man takes a paper towel or toilet paper roll and inserts it into the vaginal area. The man precedes to defecate in it. After removal of the roll, the waste begins to ooze out. Wash your hands before you eat and enjoy.
I don't care if she's a whore Robbie. She has the best tasting Fluff-pudding-and fish sandwich in the world.
by Douschie October 14, 2006
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One who inserts their fingers into an unwashed vagina (human or animal) and then proceeds to use butter instead of lubricant.
Harvey: I really fancy a fish finger sandwich.
Felix: Okay, just be quick about it.
Harvey: Okay i'll fetch the butter while you spread your legs.
Felix: I'll think you'll find that a pussy cannot spread their legs.
Harvey: Ahhh ease up.
by potentguffankle January 11, 2011
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The act of having 2 girls lie on top of eachother while your stick your dick between both their pussies at once.
"This really hot girl and her friend are coming back to town for the weekend. "

"that sounds like a fish sandwich waiting to happen."
by Velvet Pimpson May 23, 2022
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