The Big Bang Theory Season 4 Episode 17: The Toast Derivation
First aired on Feb. 24, 2011
Search for The Big Bang Theory - The Toast Derivation on Amazon
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
Quotes:
Showing 1 quote.She used to be much more fun until Leonard punched her in the heart.