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. He constructs a much more elaborate lie which leads to the appearance of a fictional cousin.br br S01E10 - The Loobenfeld Decay episodebr br #shellypenny #kaleycuoco #thebigbangtheory br br DISCLAIMER:br Some of the links in description may be affiliate links. br This means that if you click on one of the links and make a purchase, br I may receive a commission (at no extra charge to you).