J and I had a little 'anger-management workshop' over the weekend, to give him some strategies for calming himself down when he gets into a strop. At the time I didn't think he was taking it in - he was bouncing off the walls and rolling on the floor, and seemed completely disinterested. Anyway, it ended with me making notes and typing them up in pretty colours and various fonts, and pinning copies to the walls in the dining room and his bedroom.
Later, at bathtime, he went ape over something or other and Dad lost his temper, exploded with rage and stormed out of the bathroom in fury. I went up to calm things down. Once he was settled, J told me he was going to have a word with Dad and show him his anger management strategies so that he could learn how to handle his temper! So, it did go in after all! Took some persuading before he understood that now was probably not the best time to talk to Dad about anger though.