The Big Bang Theory S11 E02 - The Retraction Reactionsvenlie (25)in #tbbt • 7 years ago "The Retraction Reaction" is the second episode of the eleventh season of the American sitcom The Big Bang Theory. The episode aired on Monday, October 2, 2017. ▶️ DTube ▶️ IPFS #thebigbangtheory #steemit #d.tube #dtube