They say that smiling is good for you. I wouldn't know, since I rarely smile and I'm as healthy as a horse. But if you are the kind of person that wishes you smiled more, why not wear a hat that forces you to smile? The happiness hat looks like a normal knitted cap, except it detects whether you're smiling or not, and if you're not smiling, it jabs a tiny metal spike into your head. Expect to see these as required wearing at McDonald's in the next few years. Via: Comedy.com

From the creator's website (I think that's her in the video btw):

The Happiness Hat is a wearable device that detects if you're smiling and provides pain feedback if you're not. An enclosed bend sensor attaches to the cheek and measures smile size, a servo motor moves a metal spike into the head inversely proportional to the degree of smile. Through repeated use of this conditioning device you can train your brain to smile all the time. This is the first in a series of Tools for Improved Social Interacting.

Fuck you, happiness.