The Big Bang Theory

SN 12 | EP 15 | The Donation Oscillation

Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend; Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet."

Available: CBS

The Big Bang Theory
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