subway foot 

a foot that is somehow less than 12"

Henray: catch any fish yesterday

Lenray: just 3 small ones, the biggest was a subway foot long

subway foot by leonard7 February 9, 2013

Subway $5 Footlong 

Used to describe a mans large penis

Girl 1: "Bro I was fucking Michael, and his dick was so long."
Girl 2: "Yeah I fucked him too. It was a Subway $5 Footlong, and boy did it taste good."

Subway $5 Footlong by Vanilla Water November 9, 2017

footlong at subway 

A foot long at subway is a 12 inch sandwhich that people enjoy buying. This term however has been con notated with sex after the $5 foot long commercial which implies you can buy a foot long penis for $5

Imma go to subway and get a footlong at subway and then go home to get another foot long

footlong at subway by Jooooohhhnnnnn ceeennaaaa October 7, 2016