What a wonderful thread. Balls are fun to suck on, except if they are too hairy (shave or wax guys). I love that working on balls can increase the cum load. I am definitely into ballbusting as well - don't get me wrong, I love testicles, mine and others. And even though I would love to operate at the level of the shotgunvideo guys, I am nowhere close to it.
I don't see the point of pumping balls, the actual nut size doesn't increase and that's what it's about, the amount of hard meat in the ball. Hmm, even talking about this stuff gets my jizz dripping.