St. Patrick's day troll 

A person who wears green on st patrick's day but conceals the green so that when they get pinched they reveal the green so that they can pinch someone back twice.

Doug: *pinches chris*, ha! your not wearing green!
Chris: *undoes sweater* here's two pinches! LoL u Mad?
Doug: Ah I didn't know you were a st. patrick's day troll!

St. Patrick's day troll by tutyakbi April 3, 2011