ID Check?

I have just remembered an amusing incident in the hotel in Vienna that I forgot to include in my previous post.

I went to the gym in the hotel before breakfast on the two mornings that I stayed there. The first morning was not a problem. However on the second morning I was half way down to the basement from my 6th floor room when I realised I had left my room key in the room! No problem, I thought I will simply go to the front desk and get another one (one of these electronic / credit card types).
So I was stood there at the desk waiting in line while another guy checked out (I'm always polite like that) and when he had finished I explained my predicament to the clerk and asked for another key. "Have you any ID?" he asked.
Do I look as if I have any I replied standing there in only shorts T-shirt and a pair of trainers!!!!

I think he then saw the funny side as he gave me a key