Clothing from The Toast Derivation

The Toast Derivation

'The Toast Derivation' - Season 4, Episode 17

When the gang start spending more time at Priya's apartment, Sheldon realizes Leonard is the center of their social group, not him. Meanwhile, Penny tries to move on after seeing Leonard in a new relationship.

Air Date: February 24, 2011.

 Most of the product links on this section of the site are affiliate links. That means this site will receive commission for any purchases made through these links.