Bit crazy and scary request! Any SP would think twice before doing such a thing, the man can get hurt even.
I have actually worked for an adult site, doing such a thing!! The men find it very enjoyable!!
I am tellin you... not only ball busting but trampling and face slappin as well...it's very big in Europe...and believe it or not here!! They love it..a runway of about 7 to 10 feet..and a great big hoof to the balls !!
Google "Ball Busters" and see what comes up!