Watch The Big Bang Theory Season 12 Episode 15 online via TV Fanatic with over 6 options to watch the The Big Bang Theory S12E15 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and HBO MAX.
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On The Big Bang Theory Season 12 Episode 15, Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend and his wife.