If they don't have sex, they're not going to die.

Or . . . if John doesn't poke it up Rodney's hot ass, they're not going to die.

Did you notice that there's no in-between? John does suck cock, but it's never even considered as an endpoint. It's not sex John is after, per se, but a nice tight hole, and that Rodney has one is mostly what counts.

Now I have to stop reading comments because it's getting me annoyed with John all over again. :)