Episode Titles: Decay
You are viewing a list of 1 The Big Bang Theory episode featuring "Decay" in their title.
Season 1, Episode 10 - The Loobenfeld Decay
Aired March 24, 2008
When Leonard lies to Penny to avoid having to see her perform in a musical, Sheldon becomes concerned with the flimsiness of Leonard's lie. Sheldon constructs a much more elaborate lie which leads to the appearance of a fictional cousin.