Here is a report from BBC news:
“A woman who claimed she bit off a man's testicle "in self defense" has been jailed for six months.
Denise Carr was told by a judge at Newcastle Crown Court that the injury caused was so serious she had to be jailed.
Judge Gerard Harkins said: "An injury inflicted by biting in a manner which must have been done with some force is so serious that a non-custodial sentence cannot be justified."
Mr Hutchinson's testicle was later found by police under a picture frame.”

Now the following clips are not anywhere near as impact full at the above, they do contain lots of vigorous ballsucking- in a very aggressive manner.

She wants to suck on those balls.mpeg - Aggressive blond really wants to suck on a guys balls.
http://www.filefactory.com/file/a0f07g8/n/She_wants_to_suck_on_those_balls_mpeg

She wants his balls in her pussy.zip - Latino chica who grabs a guys nads and wants to shove them in her pussy. Three vids, unjoined, in the zip file. http://www.filefactory.com/file/a0f07h1/n/She_wants_his_balls_in_her_pussy_zip

Ballsuckers and Ballbiters.zip - a collection of images of just what the name suggests.
http://www.filefactory.com/file/a0f07hc/n/Ballsuckers_and_Ballbiters_zip