Door Kicker

So, in the middle of kickboxing training, while in the toilet getting some water, one of the kids who also trains in the class comes in. He kicks the door to the cubicle. I said in a semi-playful voice that he knew that he shouldn't do this. Well, when he had kicked the door, I had been drinking directly from the basin tap. Instead of just saying a simple 'sorry', this kid (who must've been no more than about 7), turned to me and said that I shouldn't be doing what I was doing (drinking from the tap). I then had to clarify (to a 7-year-old!) that while my drinking might be naughty, it doesn't cause any damage whereas his door kicking does. Thankfully, he didn't have any response to this apart from looking a bit narked. I don't know. Kids of today, eh?