Definitions by Mp900rr

Twobacker 

A girl whose breats are very small. The overall appearance is one of a person who posses two backs on the upper torso.

Hey check that chick out over there she is stunning, shame she is a twobacker.

Hey dude I felt like a necrophiliac when I was doing Sarah last night she was all ribs, a real twobacker

Twobacker by Mp900rr July 18, 2009