Koothrapali refuses to leave his apartment after a bad date on The Big Bang Theory. "The Monster Isolation" is the 17th episode of the show's sixth season.
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The Big Bang Theory Season 6 Episode 17 Quotes

It smells pretty ripe in here. You kinda feel it in your eyes.

Bernadette

Please welcome my friend, neighbor and flag virgin -- yeah, though not a real virgin. She's had coitus many times. Sometimes within earshot of this flag enthusiast. Once while he was trying to watch the Incredibles. Penny.

Sheldon