First Dibs: Is Justin Bieber Slurping Sizzurp?

VH1First Dibs: Is Justin Bieber Slurping Sizzurp?VH1TMZ is claiming that the root of Justin Bieber's recent erratic behavior is sizzurp, a combination of codeine, promethzaine, Sprite and a Jolly Rancher. Bieber is also rumored to be drinking, smoking weed and popping Xanax, but not cocaine. [TMZ]. We ...