Fifty Shades of Grey is a 2011 erotic romance novel by British author E. L. James. The book, which started as Twilight fan fiction, traces the deepening relationship between a college graduate, Anastasia Steele, and a young business magnate, Christian Grey. It is notable for its explicitly erotic scenes featuring elements of sexual practices involving bondage/discipline, dominance/submission, and sadism/masochism.
- Kermit the Frog referenced a fictional spoof of the book entitled "Fifty Shades of Green" during a March 2012 appearance on Good Morning America.
- Bert reads "Fifty Shades of Oatmeal" in a season 44 episode of Sesame Street.
- On Oprah: Where Are They Now?, Bert said that he has "Fifty Shades of Beige" on his nightstand.