A lot of etiquette rules go out the window in the bedroom: girls can talk dirty and it's OK to be sweaty around the opposite sex. One thing that doesn't change though: the importance of your words. Whether it's in the heat of the moment or not, your words mean something. If you let something slip that shouldn't have, it could come back to haunt you, ruining your night or even your relationship. So do yourself a favor, and avoid these 10 terrible things to say in the bedroom. Your sex life (and your future partners) will thank you for it.