TV Guide. Title reference : Sheldon stating that the Renaissance Fair was just an excuse to wear a codpiece. Howard 's universe of Conan the Barbarian. Leonard becomes worried when he learns his mother, accomplished psychiatrist and neuroscientist Dr. Penny later tells Sheldon that she lied to Leonard about graduating from community college , feeling he would not want to date a woman who is not smart, and makes Sheldon promise not to tell him.
The Electric Can Opener Fluctuation
Leonard only learns this when he comes to Penny's apartment to yell at her about their own on-off relationship. However, she accidentally touches Sheldon's onion rings and sits on his spot on the couch, thus scoring 'three strikes' including an earlier 'offense', so he banishes her from his apartment.