Don’t waste resources

I went to a restaurant with my friend for a dinner. There i saw a group of friends in party mood. I guess it would have been a birthday party. They ordered many food stuffs and wasted considerable amount of all that they ordered. Finally when they got there bill there was some additional amount appended to the bill. It was not the usual tax one it was something else. The restaurant charged them for the stuff they had wasted. They were shocked on this. The manager of the restaurant came and said “Just because we have money it does mean we can waste the resources”. So, people think of it.