It's incel-speak for dominating someone.

"IQ-mogged" would mean that person A was dominated/overshadowed/etc. by person B because person B is very smart.

"Height-mogged" would mean the same, but due to height.

There's an interesting Behind the Bastards podcast about the rise of incel culture and its push into mainstream. It's called "From Elliot Rodger to Clavicular." They talk about the language of incels and how their vocabulary tends to end up in the mainstream at a surprising rate compared to other fringe cultures. "Mogging" is one of those terms that comes from incels.

Classic mogging: https://www.youtube.com/@jacob_rees_mogg

The know your meme page on it is extensive. My distillation is:

Mogging is behaving as though you expect everyone is going to think you're great because of how you look; in particular that you think you look better than someone right next to you.

Although I have the misfortune of knowing what it means, every time I see it some part of my brain assumes it's something to do with cats (via British slang).

What I gathered is that "mog" is from "amog" which means "alpha male of the group", which makes "mogging" being "out-alpha'd". Which isn't new, it goes back years if not decades to the "alpha male" trends through "pick-up artists" to modern-day incel/bro/manosphere/etc subcultures.

I know the author from about ten years ago and I'm not surprised he's into it. But also he's Dutch so it's probably used very much ironically / as a joke here.

I only heard of it due to a memecoin, and people trying to promote the memecoin using the ‘point at you, laughing cat’ emoji combo.