common problem guys have as they pump up is that the suction pulls
the ballsac up into the cylinder. The best way to minimize this
problem is to wear a cylinder that's just 1/4" wider than the
base of your shaft. That way your shaft will quickly expand to block
it off. If you need to start with a wider tube, you can keep the
scrotum down by cinching it with a wide rubber band or cockstrap.
Also, use tacky lube to seal; liquid lube tends to run down onto
the ballsac, making it slide in more easily.
his ballsac for pleasure but it also keeps the sac out of
cinches his balls with a wide jelly ring.