Bro 2: "There's no way to tell, you're a fart chameleon."
Usage 2:
Bro 1: "Brah, I don't get it, in high school she was a goody-two-shoes, then she gets into college, ditches her old friends, and becomes a drunken slam pig. What gives?"
Bro 2: "It's simple brah, she's a fart chameleon."