A fork of Rural Dictionary
When the boy can fit all for of his finger and thumb into the woman's vagina.
"I gave that chick a good five finger fillet"
A street game in which you stab a knife between each of your fingers as fast as you can without hitting any.
Dude 1: Yo I lost two and a half fingers the other day playing five finger fillet.
Dude 2: Man you have to stop playing that.