At times, making something otherwise insignificant into something bigger to suit their own agenda.
Informed Annie: Oh Jesus, the AFA is boycotting Ford just because they posted ads in gay magazines. How petty!
Rick: you know why that is right?
Rick: cuz people are petty as hell
John: *facepalm* I hear you
Nate- "Sorry bromosexual, I gotta go buy lots of food, and save money, so I can have a nice wedding. And I cant go drinking with yall. I spend to much money."
Bob- "Awwww, dude come on. Don't pull a petty!"
Nate- "psht, psht, psht, psht...."
Bob- "You are such a petty"