I guess you mean something like this ?
thanks and apologies to vilma7oo, I just "kidnapped" this lady from the "Ball Biting" thread, here is the link: http://www.femaledom.com/forum/showp...postcount=1381
if she hears any complaints from the guy that he wanted her to suck his cum, but not his blood: all she has has to do is grab his ball and knead them a little bit - then she can literally suck him dry, and he has no chance to escape......