Sheldon must deal with the shame of having his discover disproved on The Big Bang Theory. "The Discovery Dissipation" is the tenth episode of the show's seventh season.
Sheldon: I'll have a diet Coke. Penny: Can you please order a cocktail? I need to practice mixing drinks. Sheldon: Fine... I'll have a virgin Cuba Libre. Penny: That's... rum and Coke without the rum. Sheldon: Yes, and would you make it diet?