I tend to throw my condoms in the trash. I know that a large majority of guys flush them...but, for some reason, I don't like flushing them. (Maybe I worry that they will stop up the toilet?)
I just put them in the trash. If anyone wants to dig through my trash and smell/lick my condoms, so be it. I hope that they enjoy!
I had a roommate on the East Coast who used to bring home sluts to fuck. He always made sure that he was very loud. (There were four of us living in a big house.) Then, after he was done, he always laid his condoms at the top of his trash -- with his trash at his bedroom door -- so that we could all see how many times he came the night before. No one really talked about it...but I thought it was funny.