I was out last night with a close friend of mine, and somehow this topic came up. He told me that when he is on the receiving end of sex that sometimes his testicles hurt after sex. Naturally I was worried about this so when I got home I looked on the internet to see if I could find anything but no luck. Personally I would believe that it is probably from having sex with a larger partner but I have no idea and because of this it has been bothering me since I am the type to always have to find an answer to everything. Any ideas? He is freaking out a little bit so I would like to at least put him at ease. Thanks guys.