Big Bang Theory Quiz: Who Said It - Young Sheldon Or Old Sheldon?

Young Sheldon
CBS

2. "Did You Know That If Gravity Were Slightly More Powerful, The Universe Would Collapse Into A Ball?"

Young Sheldon

Old Sheldon
Contributor

This standard nerd combines the looks of Shaggy with the brains of Scooby, has an unhealthy obsession with the Marvel Cinematic Universe, and is a firm believer that Alter Bridge are the greatest band in the world.