So take a few moments to think about your down under friends with 12 ballbusting facts about your testicles. When men refer to their balls, they are actually talking about three things: the testicles, the scrotum the skin sac that protects the testicles , and tiny tubes called epididymides that are attached to the testis and which store and transport sperm. Your testicles are your big T testosterone producers, so you want to make sure they are healthy and happy at all times! That is, your left ball and your right ball are not exactly next to each other; one hangs a little bit lower than the other or one is higher than the other, your preference. Each ball is approximately 2 inches by 1 inch, although typically the right testicle is slightly bigger than the left one. Go figure.