Do you know whether it is possible to prevent the testicles from rising up toward the body? Can the cremasteric muscle be controlled by will?

I'd like to have the hangers swinging and slapping all the time during sexual intercourse. They do hang low at the beginning, but go hiding in the end ("long" before ejaculation).

In some adult movies they have big balls banging back and forth even in rapid thrust. Do they really have that heavy sack or are they using implants?