Testicles: they don’t call them a man’s jewels for no reason. After all, they’re the source of all our manliness, producing testosterone daily, which gives us muscle definition, the hair on our faces, and the ability to perform sexually. This should explain, then, why we prize them so much, and why it hits so close to home when people like Tom Green and Lance Armstrong are diagnosed with testicular cancer — both of them got a testicle removed, and Green even had his operation televised.