It may not be the best time to flip a song Kanye West is involved in, but that didn't stop Birthdayy Partyy and RaceCarBed from delivering a smash hit remix of the Yeezus x 2 Chainz collaboration. I mean, given it's Birthdayy Partyy they kind of had to flip “Birthday Song” if you ask me. As usual, the boys cook up some hot bass, but in teaming up with Baltimore's RaceCarBed they made this one for the headbangers. That's right, some good ol' dubstep. Get ready to rage and grab the free download.