Definition of "fall down" []

• To fall to the ground. (verb)
• To collapse. (verb)

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• "Like my husband, some tuggers are using the elastic strap method to stretch the skin around their penises, while others are reportedly donning outrageous Monty Python-esque contraptions—from old fishing weights that accidentally fall down and out of a pant leg during board meetings to detached mouthpieces lifted from old trumpets, trombones, and tubas."
• "Man, wish I had a buck for each one of them I saw fall down and not get up—"
• "People do stuff like that all the time—when the police fall down on the job—"