Why YSK?
The first person who typed “should of” probably heard of it in real life that was meant to be “should’ve”, they typed “should of” online and readers thought that it’s grammatically correct to say “should of” which is in fact wrong and it became widespread throughout the years on Reddit.
I hope something could start to change.
Was it the character Manuel from the TV show Fawlty Towers? There are plenty of images of him saying “Que?”
Haha, that’s a really good replacement until I find the one I am looking for. The image I’m thinking of really showed a boy, not a grown man.