My phone will not let me type 'was' without trying to autocorrect it to SAS. I've told it not to suggest SAS multiple times, but no luck. Swiping always works, though, so it's only when I press each key.
My favorite apple auto correct: changing the word before the one you just finished. You mentally verify that it's correct, type the next word, auto correct fucks up the next word and then retroactively fucks up the word you already moved on from. Absolutely brilliant interface.