It can't have just been a plain beanie hat for that reaction surely? Unless he's an advocate of gentleman's conduct and must never wear a hat inside
Considering his reaction when his own phone went off during an interview it might well just be because he sees wearing the hat during an interview/indoors as disrespectful.
I actually LOLed at this for a good 10 seconds. What you really think someone was wearing a jester hat or something? It will be this. They all wear smart matching tracksuits and stuff pre and post game and he won't like the idea of someone strolling round in a beanie like he's top dog in someone else's tunnel.
So....it turns out that 'Mussy' was the chastised one(inside info this) and not 'Sagbo,wearing a KKK number as is in the popularised rumour version, put about by a certain allotmenteer, who's plot number shall not be mentioned. And now this... [video=youtube_share;8jYgctXpajs]http://youtu.be/8jYgctXpajs[/video]