A while back, someone busted me at my request. She was not very good at it, but she did some squeezing. She constantly commented on how hard my nuts were. I thought at first she was stroking my ego but she was serious. She said she had never handled a pair that were "like stones".
I thought that's the way all balls were. How hard are balls supposed to be, I mean what's normal. Mine can get a bit squishy but not much. Perhaps the women are best suited to commenting on this, since guys usually don't handle other men's balls.