Carl's Jr commercials feature obnoxious portions and combinations of food that are merely ideological in intent. Nobody would seriously eat a double six-dollar burger with bacon and guac, but they're advertised anyway. The goal is to affirm the macho, guy-like, over-the-top, gonzo style that currently defines American masculinity. Other examples include raised pick-up trucks, Calvin peeing stickers, and driving like an asshole.
There's no way that totally bangable chick riding the mechanical bull in that Carl's Jr commercial could eat one of those burgers and still have such an incredibly hot ass.