What do you do?

How do you deal with it when someone attacks you with gay stereotypes? I have recently been dealing with a lot of stereotypical questions from the few friends of mine that continue to be my friends after I came out. Like : "How did you become gay? Are you the man or the woman in the relationship? Have you had any STDs? Do you want to become a woman? When did you learn you were 'reverse' (it is a very common word for gay ) ? " or advice like "gay men and prostitutes are at higher risk of ... " and so on.