I would be honest with her and it would sound like this "Listen Aunite, I have this place I found online that I really like where Internet Marketers hang out and chat. The thing is they all love seeing tits and ass, so I was thinking, I mean I dont want this to sound weird or anything, but can i get some pics of your bare ass? I know your my Aunt and all but your super hot and they dont have to have face in them (unless your down with that of course). I think it would be really badass"