The Michigan-based pizza chain
Little Caesars has a promotion going where you can get a large
pepperoni and cheese pizza for $5.00 without having to call ahead and order it. This pizza is officially called a "Hot-and-Ready," but this is Detroit, so it is commonly known as a "five dollar holler," optionally pronounced "five dolla holla," but you probably shouldn't call it that if
you're white (unless you are trying to be ironic).
Five dolla hollas are not very good, as far as pizza goes, but they are still a favorite of poor high school and college students because they are a cheap way to feed people at a party.