I hate misspellings. My brain doesn’t think they’re misspellings, and tries to figure out what the words mean. For instance, “it’s” means “it is”, so whenever someone mistakenly uses a contraction when they don’t mean to, I’ll read it as written and be confused. “The dog buried it’s bone” to my mind becomes “the dog buried it is bone”, and I’ll stumble over it as I try to parse the actual meaning of the sentence rather than realise what the writer intended.
Yesterday’s The Other Coast comic had a line that read, “His ship, the Arr Billy, was was caught in a terrible storm and Teddy was washed overboard.” That one tripped me up. Other people get earworms from music — I get phrases like “was was” repeating in my head for hours.
I have a simple mind with complicated problems. ;p