The ladies search for a girl for Koothrappali when he joins them on a night on the town on The Big Bang Theory. "The Santa Simulation" is the 11th episode of the show's sixth season.

The Big Bang Theory Season 6 Episode 11 Quotes

Penny: Is having a real-life girlfriend that has sex with you getting in the way of your board games.
Leonard: A little bit, yeah.

Penny: You are so butch.
Leonard: Oh, I got a little paper cut.
Penny: Of course you did, your hands are softer than veal.