Guys know that nothing hurts more than a swift kick or punch in the nuts. It's a great move when it comes to self-defense, but a cruel move if it's being done as a joke. YOU HEAR THAT GREEN MAN?
But there are worse things men should fear when it comes to their precious jewels. Bee stings, poison ivy, frostbite, thorn bushes: these are the things that should haunt your nightmares. Also, never forget those horrible things known as STDs (condoms ftw).
So dudes, protect your assets, 'cause you really need those suckers. And when it comes to fooling around, people, watch your hands and knees, and treat those lil' those dudes like the sensitive sacs they are.
Accidents happen, but a little too much pressure will get you barred from sexy time. Trust me, you don't want to be known as the “Jackhammer.”