Rolling Rock is a brand of pale lager beer. Although founded as a local beer in Western Pennsylvania, it was marketed aggressively and eventually became a national product. The brand was sold to Anheuser-Busch of St. Louis, Missouri, in mid 2006, which transferred brewing operations to New Jersey. Rolling Rock beer is distinctive in several ways, including use of green glass bottles with painted-on labels rather than glued-on paper labels.

The number 33 is printed prominently on all bottles of Rolling Rock. A widely-held belief is that it marks the repeal of prohibition in 1933. However, according to James L. Tito, former CEO of Latrobe Brewing, the "33" signifies the 33 words in the beer's slogan: "Rolling Rock - From the glass lined tanks of Old Latrobe, we tender this premium beer for your enjoyment as a tribute to your good taste. It comes from the mountain springs to you."

A founding executive is said to have written "33" at the end of the slogan to indicate the number of words it comprised as a guide for the bottle printers. However, they thought it was part of the text and incorporated it into the label graphics. Hence, the first batch of bottles carried the number "33" and they remained that way since they were continually collected and reused (also, during the Great Depression, there was no reason to throw away perfectly good merchandise and start over). This tradition has been sustained by the company as the wording on the labels has changed over the years, and the verbiage is carefully structured to retain a length of 33 words.