You know when the terms “crazed loner” and “homemade robot” are used in the same sentence you're about to see something strange, but fear not.
Because Japanese Youtuber mansooono isn't a total psychopath, he's just a guy who likes to lick his computer screen as a way to "worship" his favorite anime characters.
But mansooono grew tired of wiping saliva off his screen, so he built a simple yet effective device to do the screen licking for him- a robot tongue.
Using a servo motor, realistic silicone tongue and Arduino circuitry, mansooono built a device that is exceedingly creepy yet effective, a robot tongue that can lick screens for a lifetime.
He also may have inadvertently come up with a convenient new way to paint our walls, look at those clean strokes!
-Via The Daily Dot