My most frequent typo comes when I'm trying to type "that it".. as in something like "I'm so bored that it doesn't even matter any more" or something like that. which then ends up being typed like this "I'm so bored the tit doesn't matter any more"..
I always put the last "t" of "that" onto the first part of "it".. and spell correct changes "tha" to "the" and, of course the second word isn't misspelled, so it stays as-is and I get no notice that anything is wrong.. except I look like a prude doofus..
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..