I found it amuzing because down here in Louisiana we have lots of "sayings". For instance, if someone asks you a question and the answer is obviously "yes", you might reply, "Is the Pope Catholic?". Another question that is often asked is, "Does a bear sh*t in the woods?"I assumed that was where they got the idea for the ad. If you've never heard the saying then you have no reference and therefore probably don't find it as amusing as us "country folks" do.