This is a cool The Big Bang Theory Knock Knock Penny Mens Tee Shirt. Very cool Big Bang Theory T-Shirt
Ok, if you know The Big Bang Theory, you're going to understand this. Otherwise, go on Wikipedia, search for the DVD box, anything you want, but just WATCH this sit-com! XD
*Knock knock k...Ok, if you know The Big Bang Theory, you're going to understan...
The Big Bang T...This clip belongs to CBS!!! Season Two Episode Nine!!! Enjoy...