To me fun can be described as something that I get enjoyment out of. Sports, gaming, going out for a beer and traveling are things that first come to mind. In all of these activities, there is an aspect of enjoyment and fun that come out of it. Sports there is a chance of wining. With winning, you get a feeling of satisfaction and enjoyment with feeling that you are better than your opponent. With going out, the social aspect of it is "fun". You are with your friends, having a laugh and enjoying the weekend.