Guy getting a erection - bad?

I heard it was bad for a guy to get erection and then not have sex...or masterbate..
I don't know I heard something like that..
is it true? or whatever im thinking of..

Well, in some cases this is true. If a guy gets an erection and leave it alone, it should be fine. But if a guy gets an erection and his testicles start to hurt, that is known as blue-balls and that can make your testicles explode.

You are probably talking about pelvic congestion other wise know as blue balls. This happens when a man (or woman) is sexually aroused for a long time without ejaculating. It causes fluids to congest therefore making the testicles tender and painful. The best way to get rid of the pain is by ejaculating. Either way, th pain usually goes away after about an hour.

Its normally completely fine as long as it actually goes away, you know, four hours and your suppose to consult a doctor.

owww testicals expodeing thats like getting castrated and kicked in the balls x10