<human>: Can you provide a brief rundown of the text in within 3 sentences?

I was browsing r/new when I happened upon a really dumb post on r/funny that wasn't funny.  I clicked on the username to see if this guy was had anything funny, or if he is just a complete moron.  Turns out he's a complete moron.  The username is [Shadywack]  After searching through his history, out of sheer boredom, I see that this guy hangs out in r/AmISexy, r/AmIUgly, r/gonewild, etc, telling girls they are fat, or ugly, or have weird looking chins.  I understand that r/AmISexy is looking for reinforcement or feedback, but when these people are hardly overweight, he tells them they are disgustingly obese.  I wouldn't mind so much if he were telling fat slobs that they are fat slobs, but he's calling average sized women fat slobs.
<bot>: [Shadywack] tells average size, pretty women, that they are fat and ugly.  I think he's a d-bag.