What the Big Bang Theory cast looked like in high school

[post_page_title]Jim Parsons playing Sheldon Cooper[/post_page_title]
Let’s be honest; TBBT would not be TBBT without Sheldon Cooper. As the star of the show and the seemingly rather annoying star of Caltech, Sheldon is a certified genius – but he definitely knows it.

With a tendency to hate any form of change, Sheldon is the flatmate of nightmares, but you can just tell that his friends also have a soft spot for the physicist. Thankfully, his wacky ways have not stopped Sheldon from bagging himself a girlfriend, or a fiancé if you’re up to date with season 10.

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