Justin Bieber gets sick on stage during ‘Believe’ tour

And . . . scene.

Justin Bieber’s concert went off the script Saturday night in Arizona, just three days before he’s set to begin a two-night stay at the Staples Center on Tuesday.

(A disclaimer: Pop & Hiss isn’t proud to post this. Even pop stars, after all, can get sick. But there’s Bieber’s name, dominating search engines -- and admit it, you’re kind of curious. After all, we wrote, you clicked. We’re all just minor players in Bieber’s world.)

The projectile moment below happened during “Out of Town Girl� at a Bieber concert in Glendale, Ariz. Bieber made light of it after the gig, joking on Twitter that “milk was a bad choice,� a quote of from the Will Ferrell comedy “Anchorman.�

Yet if there’s a lesson to be learned from this clip, perhaps it’s this: Do not trust the backup singers. This clip isn’t worth watching because Bieber got sick; this clip is worth watching because no one on stage seems to care.

Watch it now before it disappears from YouTube.

Bieber’s 2012 album “Believe� has sold 887,000 copies in the U.S., according to Nielsen SoundScan. Don’t have tickets for his gigs at the Staples Center with Carly Rae Jepsen? The secondary markets have plenty, but they’ll cost you, as they range from $50 to $585.

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