For the season premiere of MTV's 'Rob Dyrdek's Fantasy Factory,' the skateboarding mogul had a very special guest visit his wacky warehouse of tricks -- Justin Bieber. The point of Bieber's visit was for Dyrdek to give the singer a gift he purchased, but the pop star first had to "prove [he is] crazy enough to have it."

Bieber kicked off his series of stunts by launching into a foam pit on a BMX bike, as the always always ridiculous Dyrdek yelled, "We got a wild Bieber getting sketchy right here!" Bieber then jumped into the foam pit on a skateboard, and finally, a go-kart for his big finish. The 'Somebody to Love' singer also showed off his baller skills, as he kicked a basketball through two giant hoops.

Bieber definitely proved himself worthy, and he was jumping for joy when Dyrdek revealed his customized gift -- a three-wheeled race car painted purple, white and silver. Bieber was pumped about the gift, and got even more amped as he and Dyrdek went flying down the street on a test spin.

Although Bieber definitely cut loose in the 'Fantasy Factory,' this isn't the first time we have seen the pop singer get silly. In the past, Bieber played an onstage prank on tour-mate Willow and had a joint serenading session with Drake. Although music is his first love, Bieber's antics are paying off, as rumors circulate about a possible role in the Ashton Kutcher comedy, 'What Would Kenny Do?'

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