My father had a rough early childhood (pushed through foster system) and struggled in school. When he is talking he says:

secetary
"I says" instead of "I said"

And his spelling is terrible probably the worst I have seen. When I first got to college AOL IM was very popular and I would talk to my dad on it often, my roommate and I would laugh at some of his spelling. At the same time it hurt me because he loves educational programs but because of where he started he can sound ignorant.