Definitions by ~blank~

iNSTiGaToR oF uNDeRWeaR 

a person that has an interest in other peoples undergarments, it could be an unhealthy fetish by ones own judgement.

or a phrase from Pink's song "Bad Influence"

I am the instigator of underwear, and your mom is not wearing any.

iNSTiGaToR oF uNDeRWeaR by ~blank~ January 16, 2009