What is Did It For The Shirt?
1.
An excuse used to clear your status from a stupid act that you performed.
It basically comes from the idea that all events have shirts, regardless of how great the event really was.
Guy 1: I can't believe you banged her...
Guy 2: Yeah, I just did it for the shirt
Gu1 1: What shirt?
Guy 2: You know, the 'I banged your mom last night' shirt...
See