What Did You Call Me? No Seriously, What Did You Call Me?

Hello, WTFotoers.  I apologize for the hiatus but BeerGirl and I have moved to a new place and it's been a madhouse.  I think things have settled to the point where I can start posting regularly.  As a reminder, if you see anything that you think should be presented here, send it to WTFotoPics[at]outlook[dot]com.  On to the post.

One of our top contributors, Shu, sent this.  Honestly, it took me a minute to see what he was getting at.  Click the picture if you wish to enbiggen.

Shu writes:  This was among many signs and memorabilia featured in a wonderful home cooking family restaurant in Morganton, N.C. At first glance, this is an amusing joke. But upon closer inspection, there's something amiss. See if you can spot it and then tell me if you think it was an innocent gaffe or done intentionally to make each person who reads it feel like, what's the word, a dum-dum?