You might not find it used that way at Yale, but it is used to mean cumming in an asshole when gay men hook up on places like Grindr and in porn, which this site is devoted to. Studios use the term all the time, about half the time incorrrectly to indicate external creampies, but they are not meaning making babies between opposite sexes. In the publicity for this scene the studio used it… albeit incorrectly. There is even a studio with it in it’s title, even though they NEVER cum internally, but always externally. But they use the word. English is a slippery language. I guess it is like gay men calling their ass a pussy. It is not a pussy, but you know what they mean.

What does breeding mean? – Definitions.net
https://www.definitions.net › definition › breeding
Definition of breeding in the Definitions.net dictionary. Meaning of … Ejaculation inside the rectum during bareback anal sex, usually applied to gay pornography.

breeding – Wiktionary
https://en.wiktionary.org › wiki › breeding
(gay slang) Ejaculation inside the rectum during bareback anal sex, usually applied to gay pornography.
Translations … What does breeding mean? – Definitions.net
https://www.definitions.net › definition › breeding
Definition of breeding in the Definitions.net dictionary. Meaning of … Ejaculation inside the rectum during bareback anal sex, usually applied to gay pornography.