Among the Etoro of New Guinea, from about age 10 years, boys would have regular oral sex with older men, swallowing their semen to facilitate growth.
- Bauserman, R. (1997). Man-boy sexual relationships in a cross-cultural perspective. In J. Geraci (Ed.), Dares to speak: Historical and contemporary perspectives on boy-love (pp. 120-137). Norfolk, England: Gay Men's Press