Pauly D Beats 'Dat Beat' With YouTube Star Keenan Cahill

Chicago sensation Keenan Cahill has drawn in millions of fans with his hilariously executed lip-synch videos on YouTube. If you somehow haven't been privy to his skills yet, one of our favorite moments includes a cameo by 50 Cent, in which he and the hip-hop artist bounce and rap to the track "Down On Me."

Keenan might only be 15 years old, but he's got fans far and wide, including MTV's own Pauly D. Late last year, the "Jersey Shore" castie tweeted at the teen, asking him to lip-synch his song "Beat Dat Beat." And since no one can turn down Pauly, he kindly obliged. Check out the video below: