Season 9

In this episode, Justin Bieber takes the reins from Ashton Kutcher going after 3 of his celebrity friends in true prankster fashion. Pals Taylor Swift, Rob Dyrdek and Sean Kingston are all victims of Bieber's mischievous mind.

We join Jackass Bam Margera as he takes Tyler the Creator down in flames, the Jersey Shore's Ronnie finds its time to Gym, Tan and Negotiate, and Teen Wolf Tyler Posey gets slow service with his fast food.

We join host Hayden Panettiere as Glee's Dianna Agron meets a dirty old man, Zac Efron gets caught in a slow speed pursuit, and Jersey Shore's Snooki gets an eyeful.

Host Tyler The Creator puts "The Wanted" in an ironic situation, Scott Disick gets blackmailed for a Rolls, and later, 90210's Shenae Grimes gets pegged as a puppy thief.

Join host, Pretty Little Liars Lucy Hale, as she busts co-star Ian Harding, Vanessa Hudgens and Sarah Hyland crash a parade and Hunger Games' Josh Hutcherson is under surveillance.

Nick Cannon hosts an all new episode as he welcomes the New Boyz to Hollywood, Ashley Tisdale picks up a hitchhiker and Demi Lovato sees a ghost.

Dax Shephard returns as he takes on LA Laker, Metta World Peace, pocket dials Chloe Moretz, and gives Lauren Conrad a lesson in recycling.

Join host Miley Cyrus as she welcomes Kelly Osbourne back, gives Khloe Kardashian a lesson in anatomy... and Hunger Games star Liam Hemsworth.

Glee's Heather Morris hosts an all new episode as she sets her sights on Joe Jonas, Cody Simpson gets robbed, and Emma Roberts has a no go with fro-yo.

We catch up with Twilight's Kellan Lutz as Dancing with the Stars' Julianne Hough gets stuck in the mud, Awkward's, Ashley Rickards causes a toxic spill, and Aimee Teegarden makes a break for it.

Ashton Kutcher returns as Kim Kardashian couldn't be bothered and he pulls out all the stops for Drake.

This week on Punk'd join host Mac Miller as he puts the hammer down on Wiz Khalifa, tackles pal, NFL Star Derrelle Revis, and takes T-Pain for a ride.