If you want to freak people out then try staring intently at them for a few minutes. It’s guaranteed to work every time.
This guy takes on the challenge from a viewer to make a video of him staring at random strangers. With some surprising results. Not everyone tells him to go away in a sweary manner.
I think the reaction depends on what sort of person you are. I would be sat there thinking the starer was either a psycho or about to mug me for my laptop. But some of these girls seem to think he’s interested in them.
I cannot encourage anyone to do this, because there is always the danger than someone won’t take kindly to being stared at, and choose to beat you up as a result. It happens. You have been warned.