Before I became a eunuch, I did things like this on and off for years. Eventually you'll go too far and damage one or both beyond repair. Testicles can take a lot of abuse, I banded them, crushed them, mashed them, and they continued to function. One day I squished one between the toilet seat and the bowl, all of a sudden the testicle started throbbing and the pain was different and harsh. The pain subsided eventually, but that testicle eventually shriveled up and atrophied. It got smaller and smaller and hard. Eventually Dr. Kimmel removed it. I just wanted you to know that yes, if you continue on this path (and you will) you will eventually become a eunuch. Becoming a eunuch is not a bad thing if that's your goal.