http://www.nobull.net/bander/SBvideo.html
Direct link from that thread, for the lazy.
Protip: "I'll show you my dick!" isn't a conversation starter on the internet any more than it is in real life.
Hey Snoodle, if you were along in the barn, late on a really hot & humid summer night, with the bull in that video (the one with the humongous ball sack of course) what would you do, and how would you do it? He's tightly restrained in his corral, no room to kick or anything, and a shelf full of tools nearby...
The problem with a lot of vids in this thread is they're operating on such tiny little nuts, not huge swinging bags like in that video. Those pics at the top of this page show some pretty huge balls though, I'd like to have seen the "moments before" pics where the ladies are playing around with the sack, getting those huge things into position.