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The Propagation Proposition

The Propagation Proposition is an episode of The Big Bang Theory starring Johnny Galecki, Jim Parsons, and Kaley Cuoco. Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to...

Duration: 22M

Quality:

Release: 2019

IMDb: 7.2

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