Post those pictures on the "post pictures of yourself" thread, and see what his reaction would be. Though cover him up a bit more - wouldn't want to get in trouble with the Feds like he would.
This is a hypothetical scenario - how do we go about reporting him to the Internet Feds? If we figure that out, would the forums be closed down when the Feds find the pictures? If so, would Badspot be fined for "allowing" that content to be on the forums? If so, let's not report him to the Feds, and just get his account and IP perma'd.
I've got another idea! Someone purposely act gay, seduce him, get him to tell you his address, then send him his own pictures, hoping his parents find them, then hope his parents aren't the ones taking the non-selfies, then hope he gets his everything taken, including his phone so he can't post that scrawny-assed, tight panties wearing body of his.