pounding the tuna

Pounding the tuna means to have sex with a girl

Dude: Yo Bro you wanna hang tonight?
Bro: Nah man I'm pounding the tuna tonight.

by Tygan Jonate Dreid May 31, 2016

pounding your tuna

Fucking a girls's pussy really hard

Boyfriend: Do you want to me to do what I did last Saturday, pounding your tuna
Girlfriend: Hell yes!

by The Guy Who Stalks You December 16, 2017