All this talk about "sport", and everything mentioned so far has been a recreational activity... not a "sport".

Now, if you can get killed as a matter of course (which discounts BS like a heart attack on the green), such as taking a bowie knife to hunt a grizzly bear, then we're talking "sport".

Easy litmus test: can you say, "I'm going to play ______"? If so, it's a "game", not a "sport".