Only Sheldon Would Score 100% On This Big Bang Theory Quiz!

Penny Big Bang Theory
CBS

9. What Are The Last Four Digits Of Penny's Social Security Number?

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Software Engineer by day and a self-proclaimed writer by night, this highly functional sociopath is an avid follower of pop culture and everything nerdy. Every hour he can be seen ranting about social media and working up a migraine over everything on Twitter (What a hypocrite!).