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The original was posted on /r/todayilearned by /u/ObjectiveAd6551 on 2024-12-24 12:17:24+00:00.

Original Title: TIL Richard Simmons and David Letterman had a falling-out in 2000 after Letterman sprayed Simmons with a fire extinguisher during a prank, triggering an asthma attack. Simmons returned in 2006, only to face another prank where his branded steamer exploded on air, forcing him to run for his life.