1. to barely slip by something; a hidden act that was almost caught or an act that is unexpected. Used as 'to pull a gary'.
2. a name for a boy
Dude 1: I failed my test with a 69 today...
Dude 2: Haha, I passed with a 70, and I didn't even study.
Dude 1: Dam u, u pulled a gary.
Hey, Gary, what's up?