I went for a walk and by the time I came home everything was calm.  Read to Joey and put him to bed.  He apologised.  I shall find out later what happened.  Can't talk about it now as Joey has very good hearing and can hear us talk, even if we whisper.  The amount of times we will be chatting and next thing Joey shouts down 'What do you mean about xxxx?'  Cheeeky wee bugger.