1 definition by handlesandle
A ninja thong is a thong that you have to pay really close attention to see but it's almost impossible
Guy 1: Damn, I don't think Lucy is wearing anything under her dress not even a thong!
Guy 2: No she is, she is wearing a Ninja thong I saw her in the girls lockerroom!
Guy 2: No she is, she is wearing a Ninja thong I saw her in the girls lockerroom!
by handlesandle December 28, 2015