Hey. For those who don't know. Your testicle(s) twisting and cutting off bloodflow is a real thing called Testicular Torsion. Supposedly it feels like your balls are having a heart-attack; and supposedly a heart-attack feels like an Elephant is sitting on your chest. Ergo, Testicular Torison feels like an Elephant is sitting on your balls.
Yes, there's a super rare small but possible chance you can accidentally do it just by sitting down.