Wanting a picture of my friend's dick

Hi, so I have this friend who wants to get into trouble at school all the time. He gets suspended, does detentions and never stops talking about what girls have done to him. I talk to him in school. (He's in my class) but he's not a likeable guy for most. He never stops lying and can be quite annoying. But I was looking at his profile picture like 2 days ago on an Instant messaging service, and it was a picture was of his balls. Very close up and you can barely see anything. But now, I wanna see his dick. I need advice on how I can do this. But don't just say "ask him can you see it" or "invite him over to watch porn" or some shit. That's far too obvious. I need to sneakily do it. Oh! And is it normal?