My wife and I were chatting and she replied to something I said by saying "youse is a good boy". We've been married for fifty years so we share a lot of memories about a lot of things, that being one of them. The comic strip character who said it was a character named Denny Dimwit. He appeared in the Perry Winkle strip which evolved into the Winnie Winkle strip later on. Denny, of course by the name you realize, is a little slow. I think the character was no longer used when PC came about. If political correctness met Denny, I'm afraid he would have been cut, but those were different days.