an act of being a sandy infested vagina. one, who backs out of most obligations and agreements. also considered a "weakbody", or one who's body falls into the category of weak and/or obscure.
Bob- "Hey buddy! You wanna crunch it?"
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"