Ooh. Advice? I did a bunch of reading about the KB Swing Challenge in anticipation, and one guy said something that stuck with me: that he only knew how to do a proper KB swing after the challenge, or at least nearer the end. Watching all the videos, or having someone experienced show you, is great guidance. But I thwacked my taint as you call it more than once, and only got the move down pat after thousands of repetition. I would say that it was more my forearms that were making contact with my groin/ass, not the KB itself. So the trick is to have your shoulders and arms fully extended during the KB's swing down. But that's the easier part of the swing. The money maneuver is the hip hinge that is the snap of the swing that sends the kettlebell up either to eye level or directly above your head if you're comfortable. Does that make sense?