Justin Bieber pranked Cody Simpson on stage during one of his performances at their Kansas City concert! Cody was shocked when Justin ran on stage and started dancing. After the show, he reacted to the prank, tweeting, "@justinbieber haha mate, good one crashing my show tonight. Sleep with one eye open brother." OMG! Check out the video of Justin pranking Cody below!
What do you think of Justin's prank -- so funny or not so cool? Let us know in the comments below! PLUS, to find out Justin's fave Halloween memory, pick up the October/November issue of TWIST on stands now!