TMZ tracked down Bristol Palin's heckler -- the one who screamed, "Your mother's a whore!" at a West Hollywood bar last night, and he's not ashamed at all. Stephen Hanks is a 47-year old L.A. consultant who would not say what he consults on. He did, however, tell us this was not a setup. As for Hanks' thoughts on Bristol's comment -- jumping to what turns out to be the correct conclusion that he's gay -- he has more choice words for Sarah's little girl.