That is very true @jusipassetti, the one that goes with that is "I am ok". I say that often when I am not feeling well but I don't want to tell the person that. But that is mostly to strangers if it family or real friends I would say how I feel. Thank you for sharing this!
Another one that I like to use is "I'm good thanks." Like you this mostly to people that I don't really have a relationship with. I'm glad you enjoyed reading it @hope777.