my son whose in Y2 had 2 of his friends over after school. During dinner they were laughing about my son showing his bum while getting changed for PE today. My sons face dropped as he knows I do not find this behaviour amusing in the least. Then one of the boys said before half term he showed his winky out of the side of hos shorts while on the mat. I am so cross and mad right now he knows not to do this and it's inappropriate behaviour. Once the boys go I think I'm going to go mad! What do I do, what do I say?