I am a poetic genius, says Justin Bieber on Instagram

Teen pop sensation Justin Bieber claims he is a poetic genius.

Bieber's Instagram 'poem' is a hit: Reuters

Bieber's Instagram 'poem' is a hit: Reuters

The 19-year-old singer posted a shirtless picture of himself backstage and a video of himself lip-synching to Drake after his San Diego concert on Sunday, reported Radar online.

"Blue is new and you are too a few shoes have shown me clues my crew also knew that zoos have news. I'm a poetic genius," he wrote on photo-sharing site Instagram.

Friends close to Bieber are increasingly worried that he has a substance abuse problem. His manager, Scooter Braun, reportedly wants him to go to a rehab.