I like doing this just to **** with people sometimes. It's a pretty cool trick but it can be difficult to see with improper lighting in the room, or if you keep trying to do it over and over again. I'd recommend doing it in a mirror to see it better. I usually do 10 clicks or so with my tongue, then I press my hand down on my mouth and compress the air, like this guy does on the first attempt. Can you guys do it ?
