If you saw the movie
Dark City, it is doubtless you remember
the Stranger Mr. Sleep, as played by
Satya Gumbert. His character had a trick he'd do... wave his hand in front of your face and command
Sleep now!
and darned if everyone he tried it on (with the perennial exception of our stalwart protagonist John Murdoch) succumbed to an irresistible urge to slump down and catch 20 z's.
It really is quite a neat party trick. I've been practicing it, but so far all I can bring my strange mental acuity to influence is putting bricks to sleep. Hey, it's a start.