[jessaustin]

It's entertaining that Google are and always have been typo-squatters, but "pwn" has been a typo since the very first time it was typed.

Now since there is no red squiggly line I am wondering whether I added "pwn" as a custom addition to my local dictionary...

[mistercow]

Seems to be standard in the macOS spellcheck dictionary. Some traditional dictionaries now contain it as well.