Who's Bashing Bieber? A Celebrity Checklist

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Along with the unrequited love of a billion tweens, Justin Bieber has earned equally intense scorn from parents sick of hearing "Baby," mischievous 6th graders trying to wind up smitten classmates, and overreaching critics who laughably equate Bieber's popularity with the crumbling of Western culture.

In rarer cases, Bieber has been mocked by his celebrity peers--sometimes with merit, sometimes without. Today we run down a list of other public figures who have teased the Canadian pop star and evaluate whether they've got a leg to stand on. Surprisingly, many of them don't. Read on.