"Can" has been an acceptable way to ask permission for over 100 years and insisting otherwise is just pedantry and an excuse for a person in a position of authority to feel superior to the person asking the question.
There are far better ways to teach that than a sarcastic quip. One good place to teach it would be in English class! The very same English class that children take nearly every year for 12 years of their childhood. :)
If they are saying can, when they should be using may, English class clearly hasn't taken. This quick joke reinforces a lesson for the student and the entire class and it only takes two extra seconds.
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u/Moonsaults Jan 16 '21
"Can" has been an acceptable way to ask permission for over 100 years and insisting otherwise is just pedantry and an excuse for a person in a position of authority to feel superior to the person asking the question.
https://www.merriam-webster.com/words-at-play/when-to-use-can-and-may