Zac Efron and Seth Rogen spoof Kanye West's 'Bound 2' music video to promote their upcoming movie, 'Neighbors.' As John Basedow (@JohnBasedow) reports, the stars followed in the footsteps of Seth and James Franco's 'Bound 3' viral video parody by posting a shirtless pic from 'Neighbors' with the caption 'Bound 4' on Instagram. With almost 80-million Likes so far, buzz about the new film is spreading rapidly.