I don't mean to get gross and nasty, but, if you wanna "dispose" your used condom with your load in it, just tie it up at the top and save it ... I am sure many people are willing to buy used condoms as noted by Miranda in this thread.
I am not saying I am one of those men who'd buy them, but there is a market for it ...
As for me, I wouldn't mind buying female ejaculants to make ... ummm ... like the English would say, "sweets" ...
Hey, why not? Get some extra cash along the way ...