My friend sent me a photo of his penis to me and wants on in return, and I don't want to send on of my vagina, so what to I send him back?
Any ideas?

Just tell him how you feel.

DO not send pictures of your private parts or ANYTHING that you wouldn't want the rest of the world to see. Pictures like those can end up just about anywhere, and your name will be attached to that. You can not un-send things like this, and they can haunt you for a long time.

Tell him that you don't send those kinds of pictures, and would prefer it if he didn't either. Tell him your parents pay for your phone and if they saw it you would get it trouble.

IF you are a minor, this can even be illegal. Next most boyfriends and girl friends break up at some point and any picture could be shared with all your friends at school or put on the internet.

So unless you are the type of person who puts naked photos for everyone to see, you don't, you tell him that he should have more respect of you than that