I finally have had time to read the thread here. There are some great examples of spelling errors! So many good laughs! Thank you everyone!

Matthew, that story of "You are cutting off my calculation" is hilarious!
Speaking of hilarious... I just typed hysterical at first and had to correct it!

I remember as a child making the mistake of calling something funny "historical". My siblings called me out on it and teasingly said "Yes! It definitely will be remembered in future books of history!"
I sometimes write "who" instead of whom if I am tired and don't look over my work.
I liked English but I was never great at spelling and keeping all of the "tenses" straight.
I remember my mother used to tell me to look words up in the dictionary if I didn't know how to spell them.
I in turn would ask "How am I supposed to look a word up in the dictionary if I don't know how to spell it?"
But... I definitely remembered how to spell words if I had to look up several places to find them in the dictionary. So, maybe she was right in her suggestion?