He never normally bounces, he's more of a scuttlebutt type when he's fresh...but called him over, so he went to go trotting over then clearly just was overcome with a sudden 'urge' to do that. His face after he'd done it and came back over to me, was priceless. He was just 'Oh, Mum...Don't quite know where THAT came from!!!!! Woopsy. '