This happened last week at work. I had my left thumb taped up. I had injured it in sparring (explanation later) and I seem to keep re-injuring it. So, a patron asked me what happened and I replied with humor that when your instructor tells you to hit with your first knuckle (simulated a small sow choi) you really need to do that and not hit with the center of your thumb. (Which is what I stupidly did). His reply perplexed me, he explained yeah that you need to make a proper fist. That is the mansplaining part. Like this dude did not know my experience, but he felt he knew more and had to show me this? And the weird thing was his fist was - to my training- just dumb. He curled the fingers in typical fist pattern, but then held the thumb straight at the side- not curled over the fingers. So he mansplained and IMO didn't have a clue. I politely said something about different styles having different fists and showed him how I do it. I also politely asked what style he trains in. He said his father showed him that from military training. I politely muttered something. After all, I was at work and he was a patron. So, CLF has a ton of different fist/ hand strike positions, but none of them hold the thumb straight to the side like that. We always use the thumb to reinforce the other fingers in some way. His way seemed like a good way to injure your thumb. (And I should know as I did something wrong and injured mine!) But does anyone know of any style or military training that teaches a fist with the thumb straight up to the side? Just to double check. I mean the guy was friendly enough, but it seemed like he just assumed I knew nothing and could spout nonsense at me and I would think it was knowledge. I can only assume because he thought a female wouldn't know better? The whole thing did not upset me, just in case people can't read my tone through these words. It amused me.