Seeded womb thread

>balls twitching
Is there an commonly accepted term for this?
Also I remember seeing a gif ages ago of a girl holding a cock stationary in her mouth. You can see her reaction of surprise the moment after the balls begin twitching, it's really hot. Anyone know which one I'm thinking of?

hi im fourting but im a pussie lover , y fap a lot with ur bf :(

In porn the general tag is "contractions".
But it's never just the balls that twitch, what you see depends on the angle it's filmed from.

You're a lifesaver. I'd never known it was really a real thing people liked until now

I wouldn't call myself a lifesaver for that, but I think people like it because all the best pleasure from an orgasm doesn't actually come from the dick, it comes from all those contractions inside your pelvis.