Simple, girls can play with the guys or vice versa. And to me you need a team to be called a sport not a bag and I think it's more of a hobby then anything else. Other hobbies that are called sports are swimming, running, cheer leading, although being a male cheerleader wouldn't be all bad, Hunting, archery, etc you get the idea
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"It's Called the American Dream Because You Have To Be Asleep to Believe It"
George Carlin