Little sperms? where do they go?

sperm inside mens testicles i guess swim around inside the testicles. What happens to sperm that becomes too old? like after a while if it does not get ejeculated out does the body get rid of it? or does it live long term??

no flaming pls
i'll appretiate any scientific replies 2 this :)

Are you saying that your testicles are actually some kind of sperm graveyard?