Found this on Reddit:
We decided to try out a new Mexican restuarant in town. After being seated, I drew her attention to a cast Metal picture of a shirtless Mayan warrior carrying a nude woman.
“Hey, check out the porn on the wall.”
“It’s not porn.” She said ” It’s art”
“What? There’s metal boobs right there, what makes it art and not porn.” I asked.
“If you can add a naked midget and it doesn’t seem completely out of place, it’s porn. If there was a naked midget standing behind them, what would you say?”
“Probably something along the lines of. What the fuck, why is there a naked midget?”
“Then it’s Art.”