win-win
Explanation
The Joke
A woman asks a Catholic priest if he is opposed to gay sex, and he confirms that he is. She then asks if he would be interested in "drastically reducing the incidence of gay sex for particular couples." He tentatively agrees, wondering what that has to do with anything -- and then the realization hits him: "WHOAAAAAAA." The caption reads: "I managed to change the Catholic Church's policy against gay adoption."
The argument is clever: if gay couples adopt children, they will be exhausted parents like everyone else, and their sex life will plummet accordingly. So if the priest truly wants to reduce the amount of gay sex happening, he should enthusiastically support gay adoption.
The Humor
The comic constructs a logical judo move, using the priest's own stated values against his position. The Catholic Church traditionally opposes both homosexuality and gay adoption, but the comic points out an internal contradiction: if you genuinely want less gay sex, you should give gay couples children, because nothing reduces a couple's sex life like raising kids. The priest's dawning realization -- captured perfectly in his drawn-out "WHOAAAAAAA" -- is the moment he sees the logic is airtight, even if it leads somewhere his institution would never go. The humor lies in the weaponization of mundane parenting reality against doctrinal rigidity.