The teen pop star must not have been feeling well on Sept. 29, 2012 as he puked onstage in the middle of a song. Bieber was performing in Glendale, Ariz. -- the first stop on his Believe concert tour. Later that night he tweeted, "Milk was a bad choice! Lol."
Mother Monster tossed her cookies on Aug. 16, 2012, while performing at her Born This Way Ball in Bucharest, Romania in front of 35,000 people. Halfway through the show, Gaga ran offstage to throw up and came back, telling the crowd, "I went backstage and vomited, and I did not want you to see this ...
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