1975, Kenneth Tynan, The Sound of Two Hands Clapping, Jonathan Cape, →ISBN, page 194:
Pygophilia may be, in Mr Melville's phrase, 'an infantile condition', but it is by several months less infantile than the curious obsession with breasts that plays so dominant a role in modern machismo.
2010, Christi Smith Scofield, Ted Scofield, Sexy Slang's Bedroom Challenges: 69 Ways to Spice Up Your Sex Life, Sourcebooks, →ISBN, page 16:
Pygophilia is sexual excitement caused by seeing, touching, or fondling a woman's derrière.
2013, Jesse Bering, Perv: The Sexual Deviant in All of Us[1], Farrar, Straus and Giroux, →ISBN:
A hebephile (from “Hebe,” the Greek goddess of youth) prefers pubescents between the ages of roughly eleven and fourteen, and as for pygophilia, it's all about the buttocks.