This is a point of view on the whole Joe SixPack meme that I hadn't considered. The whole post can be found here, but I'm quoting the first few paragraphs for epic truthiness!

My Fellow Joe Six-Packs:

Sarah Palin et al like to call us "Joe Six-Pack," and they think we like it too. They think it sounds folksy and homey and cute.

Sure. It's a folksy, homey, cute way to euphemistically call us something very close to trashy, ignorant hillbillies. We're just not supposed to be smart enough to realize it.

See, JSP isn't referring to our rock hard abs. JSP literally means "the blue collar guy who picks up a six pack of cheap beer every night after work and goes home to watch Nascar (and probably beat his wife/kids and light a cross on the black neighbor's lawn but we won't say anything about that wink wink nudge nudge)." That is the message that they are trying to get across to America.

I knew that the whole idea of 'lowest common denominator' was bothering me. Thank you to the folks at copperwise for clearly stating why.