Above: Oliver does "Mr Serious".Oliver has a deadly serious look that he has started to do. I think he has got it off Hayley who does something similar sometimes when playing with him. Anyway, he knows it makes us laugh, and I mean really makes us laugh. Consequently Oliver does it on demand. "Can you do Mr Serious, Oliver?" and there it is!
Below: Oliver trying to do Mr Serious but unable to keep a completely straight face.