The premiere episode of the series, which explores the psychology behind pranks and practical jokes. Included: the fight-or-flight response; unusual VIP services; and the invasion of personal space.

What happens when one see what's not there. Also: over-sympathizing with strangers; and fighting authority.

Watch what happens when walking on water makes you feel a little woozy, when your mind transports soda through thin air, and when you're forced to hear a couple's intimate conversation about sausages.

Revel in the ridiculousness when a marriage proposal goes down the drain, a stranger falling into your lap, and a voodoo doll creeping you out like you've ever seen.

Check out the hilarious psych behind having your space invaded by a life-size teddy bear, and runway host, and ridiculous close-talker.

Watch what happens when a stunt driver goes in disguise to take a driver's test, when a stranger gets way too close for comfort, and a movie trailer voice-over guy narrates people's lives walking down the street.

Watch what happens when a baby floats away with balloons, a car alarm gets personal, and some tough guys get more than they bargained for.

What would you do if a stranger popped a kid's balloon, or popped you the question?

Watch the ridiculous human psychology behind a talking crosswalk signal, a creepy weatherman in an elevator, and a break-dancing 70-year-old man!