You did the right thing, that is for sure. What an awful role model that dad was, if it was his dad?? He in that minute has shown his son how to behave, lie, cheat, be rude, aggressive, hide the evidence etc. That is assuming it was the other lads cap which I believe that it probably was. What an unfortunate way for that father to show his son all the wrong ways to react in that situation. He could have simply said, "sure lets have a look". Then after he follows it up with an obvious lie about the nanna in Spain. Pity that child if the man was in fact his "father." Beggars belief!