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Mock Ups, also known as Bogus Blimps, are strange balloons in Super Mario World 2: Yoshi's Island and its remake Yoshi's Island: Super Mario Advance 3 that only appear in a few levels. When a Yoshi gets too close, they inflate. If a Yoshi eats one before it pops, a 1-UP is awarded. However, if the Yoshi fails to eat the balloon, the Mock Up pops and reveals a Fly Guy who then flies away, while the Yoshi is injured.
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