If you're not familiar with the show, the Fantasy Factory is a converted warehouse from where Dyrdek runs his many business ventures. It also serves as the ultimate playground for Dyrdek and his pals, featuring an all-concrete indoor skate plaza, a foam pit, numerous basketball hoops, a recording studio, and even "bat cave" parking. Basically, it's a place where your fantasies can become a reality! I guess that's why Justin couldn't wait to get his hands on some of Dyrdek's toys.

With a little encouragement from Dyrdek -- who at one time held 21 Guinness World Records for skateboarding -- JBiebs attempted to show off his wild side by biking, skateboarding, and even driving a go-cart into the Fantasy Factory's foam pit. Who knew the "Baby" singer had it in him?

After proving himself to be just crazy enough for Rob, Justin was presented with a special gift, which he turned loose on the streets of Los Angeles.
Check out the fun clip of Bieber unleashing his inner wild child at the Fantasy Factory:

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