This is a reply to the definition provided by J. Michael Reiter.
I do know what its like to carry a rifle, full ruck and LBH. I served in the airborne for 8 years. I also play paintball. And I enjoy every minute I spend on the field. I saw many of my friends die while I served, and it makes me feel good when I can see my friends get right back up after being shot by a paintball.
Oh and by the way most of the people who play paintball are not "wealthy overgrown adolescents."
I love paintball. I love my country. God Bless the USA!