Sounds like Cornelius is a paid caller like a dozen other people who regularly call that god-forsaken show...
Has anybody called him Dave lately?
By the way, I hate that George calls people names different than what they have, somebody will call and say they're David and then he'll also say Dave. In my life, I have come across many people (Timothy B. Schmidt of the Eagles being the most famous one) who absolutely abhor being called anything but their full first name. This includes a horny girl I knew named Kimberly. To set her off my scent, I would call her Kathy BUT NEVER KIM! I wanted to keep all of my appendages attached to my body, especially my head.