Description

Knock Knock, Penny...Knock Knock Penny. How many times does Sheldon need to knock to not go crazy?! If you're a true BBT fan then then trivia app is for you! Test your knowledge of our favorite nerdy crew and see how well you truely know the.

Let's get quizzing! Bazinga!

If you have any feedback or issues to report please feel free to contact [email protected].