@roger,
Years ago I figured out that some short words just look wrong if you stare at them long enough. This can be disconcerting.
I misspelled 'weird' for decades. I most often misspell sound-alike words such as hear for here, their for they're - my fingers being faster than my brain.
I too have been known to screw up the spelling of broccoli, but I think of the movie Rocco and his brothers and set myself straight. I often mistype 'and' for 'am' - another brain fart through my fingertips.