>>942022571
> " I hate it when they jerk off while sucking [ someone ] off ..." : referring to >>942021967
blue shota, jerking himself, while fellating his friend ;

dude : he's just trying to ensure that he synchronizes his own ejaculation with his partner's climax:
I'm saying "it should be a target", (but it's something to aim for:
https://www.youtube.com/watch?v=aSbM1nMdra0