I don’t care if he calls me sir.
Stu gets a little mixed up sometimes. Sometimes when I ask him to do something, he will be in a good mood, a behaving mood, a “I want to get a star on the chart mood” and will say “Yes, Sir!”. (I’ve been trying to teach him to call adults sir and ma’am when he doesn’t know their name, or when he is in trouble or when they are talking seriously to him.) So, when he gets it mixed up and calls me sir, it is ok, because he’s trying and who can tell your kiddo you aren’t a “Sir” when they look that proud of themselves.