Not remotely nasty???? I don't understand how you can think this is nasty towards Karl unless you really have never seen Ricky and Karl together. They're bessie mates in real life and all their comedy together is based on Karl's odd observations of the world and Ricky laughing at him.
I actually love Ricky but he is beyond arrogant it's true, doesn't bother me though, I don't need to like him as a person, but I think he's a genius of a comedian.