Teacher: "What is an OS? And give me an example."
Student: "An OS is a word which can be used instead of saying 'Oh Yes'. For example, do you like ice cream? You can reply, ‘Oh, yes' or 'OS.'
Teacher: "You may sit down now."
My 4th grade teacher used to complain to my mom about my poor hand writing. I tried hard for years, only in vain, to continuously get the feed back, "Try to improve your handwriting!"
I am 25 now, working as a software professional for a company. I mailed her last week for thanking her for making me what I am now.
She replied with a post script... "Please improve your handwriting!"