Home / Series / The Big Bang Theory / Official Order / Season 12 / Episode 15

The Donation Oscillation

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.

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  • Originally Aired February 7, 2019
  • Runtime 25 minutes
  • Original Network CBS
  • On Other Sites IMDB
  • Parental Guideline TV-14

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