*Ask Jen: The Learn Nothing Edition

Pete writes, "Down the street from my job they are building a new apartment complex and naturally they have the site blocked off with plywood. On the plywood they have painted 'post no bills'. I have seen this all over the place at construction sites and I was wondering what the hell it means and when it started."

Well, since you are a lifetime East Coaster, I'm pretty sure you know it means, "this isn't a damn bulletin board, jackass". Unfortunately, I can't enlighten you any further. I can find no information on the origins of the phrase. In short, I suck.