I can tell you it’s a real thing because it happened to me. 6’3” and at that time (19 or 20) was probably right around that 180lbs - no one would have describe

I can tell you it’s a real thing because it happened to me. 6’3” and at that time (19 or 20) was probably right around that 180lbs - no one would have described me as muscular back then though, just skinny more like it. Anyways, first day of training, the first thing the instructor did was assume I needed humble pie. Told me he wanted to see my baseline, said get in the cage, and called over the only female in the class. She was ~5’6” ~140lbs from memory. Not chubby, just stalky and solid. Rest of the class came over to watch with cheeky smiles too. Later found out it was kind of her thing to break in the new guys. She had me in a rear naked tapping out in under 30s. I didn’t know what it signified at the time, but she was a brown belt and regularly took home hardware from regional amateur tournaments. I had ~6 mo striking experience (Muay Thai), but had never rolled, never wrestled in high school. Best and only entry on my grappling resume was growing up with a brother. So it does happen, as I can attest, but I do understand your skepticism if you haven’t seen it, especially because of additional hidden context like this: - I had never directly encountered, and was extremely uncomfortable with, the idea of physically overpowering a female. It was the most unnatural thing, and I was psychologically paralyzed by this until it was way too late. - She had zero chill. Probably read my obvious body language, and knew her play was to blitz. - I didn’t know how rolling was supposed work with any opponent, let alone a female. I didn’t know rolling etiquette, conventions, nothing at all. Not that it would have mattered because she had no intention of offering me the usual respects anyways. If she had attacked me on the street with murder in her eyes, and I reacted with full force, would she still have gotten the best of me? I’d like to tell myself I would’ve bested her in a life or death scenario, but truth is I’m deeply uncertain of the outcome in that hypothetical.