I was a kid and sat on a log around dusk and didn't see the scorpion. I was earing those godawful 70's era tiny gym shorts and the bug nailed me on the inner thigh right at the crease. I jumped, the critter fell into the clumpy grass where I followed with a unthinking hand slam. The ground wasn't flat so my shot was wasted and got stung again on the palm for my trouble.
My buddy, who was allergic to bug stings stomped it flat. He gave me an antihistamine he'd kept in his kit and except for an uncomfortable couple of hours was no worse for wear.