Eh, if he wants dick pics for himself, all he would have to do is ask. Plenty of a dudes on the intawebs are narsacistic enough to provide. I believe that Anon wants dick pics in order to catfish some chic. Whether or not she's his sister is the doubtful part to me. Regardless, I am willing to play along.
Give us a reason to get interested, Anon. Post some photos of your sister or tell us about the time she banged with you.