A fork of Rural Dictionary
It is a form of Slang for Vagina
her cooch smells like a tuna fish sandwich
(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.
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."