Over twenty years ago, my daughter C, then about 17 years old, came home after a day with a friend and asked me an interesting question. "My girlfriend says I intimidate people. What do you think?" After a few moments it occurred to me that some things, such as the ability to intimidate, can be inherited. "Sweetie, you have the ray, just like I do. You know the look you and your brother sometimes got that let you know you were out of line? We inherited it from your great-grandmother. She seemed very intimidating. Once you got to know her, she was really a very kind person. There has never been anyone as fierce, though. So the answer is, yes, you can seem very intimidating. It comes in handy at times, so learn to control it."
When I was teaching, there was never any doubt as to who was in charge in the classroom. Because I showed respect for students by coming well prepared and making it clear that I would always be fair but firm, the young folks quickly learned (and I suspect older students passed along a warning to their younger siblings) that it was safe and fun to be in my class - as long as they were respectful to one another and the teacher.
For students who threatened the peace in the class, I would employ the ray, that special look that was a clear warning of danger. Any student who ignored that glance did so at their peril!
These days, there is little use for the ray. When I am in a group, everyone is friendly and I am in charge of nothing but myself. What a lovely situation. K commented today that she has never seen that look. Hopefully she never will.
From time to time walking in a mall, down the street, or in a crowd, such as a theatre lobby, when there is little better for anyone to do than people-watch, someone's gaze will stay on me for a bit too long. Generally, I just smile to let them know they have been noticed and I am harmless. For those who cannot let it go, there is that look that lets them know it is time for them to show some respect and back off!
Intimidating? Not me! Let's just say - I don't suffer fools or boors gladly.