3:30 Joey can be so weird at times, even he changes his mind on his own after a few minutes, like he has a split personality... maybe he's been trying to copy Charles's nonchalance as a way of seeming cool over the years.
Personally I don't think it's weird to change one's mind or realise that you've said something that doesn't feel right or might be perceived as being wrong and then promptly correct yourself. I do that in conversation - If I've said something in error I will correct myself or apologise. It seems normal. 🙂