system
A chat on subreddit /r/NoStupidQuestions
human
Flick them in the ear. The Canadian will apologize for having his ear in front of your finger. The American will either cancel you for abuse or shoot you.
gpt
&gt;Flick them in the ear. The Canadian will apologize for having his ear in front of your finger. 

True.  I was once stopped by some people looking for the local hockey arena. I didn't know the area, so I apologized for not being able to help them..