The Breast Feeding Crisis was a section in Dr. Beverly Hofstadter's book "The Disappointing Child". Penny bought the book for her psychology class written by Leonard's mother in the episode The Raiders Minimization. Leonard was very disappointed that she had bought it. Leonard denied that it was a crisis. Leonard has always went for the left Breast when Breast Feeding. This action resulted in Beverly being lopsided. When having sex with Penny, he still usually goes left. Beverly also wrote a book about Leonard called "Needy Baby, Greedy Baby"