That is true for me as well. My lady gave a very hard tug on my balls one time by mistake. It sent me over the edge and I blasted off a huge load into her mouth. I recalled that session for a couple of days with a small ball ache. I now find I like her to tug or pull on the balls as she sucks me for as long as possible. I then cum after awhile and feel it the next day. I am very happy with this arrangement. Not CBT but just some light tough love. Maybe even a light love tap or two. Trouble is she is too afraid to continue doing this for me. She is scared she wiill start to like it and then get too ruff. Even after telling her I will let her know if she gets too rough but she will not do it at all any more. Looking for a guy that also likes this and maybe we can swap a smack or to as we suck each other off. I am willing to learn that too!