Sonic Drive-In Custard Concretes TV Commercial, 'George Custer'

The Sonic Drive-In guys are sampling the Custard Concretes when the one dressed with a wide-brim hat and Civil War jacket starts declaring things in an old-timey accent. His buddy asks him if he's supposed to be a riverboat captain, but he replies he's dressed like George Custard in honor of the treat they're enjoying. It's a great pun on Officer George Custer's name, but he doesn't realize the man isn't actually named after a dessert.