The Big Bang Theory

Season 12 Episode 15

The Donation Oscillation

Aired Thursday 8:00 PM Feb 07, 2019 on CBS
8.1
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The Donation Oscillation
AIRED:
Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet."

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