when a woman starts her period
Jack: Hey man, you get some from Francine last night?
Harold: Nah, man. Jovie had to fall off the roof on Monday so none this week.
Jack: At least she ain't pregnant, yo!
by G. Wells March 6, 2006
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A saying that you use if you are angry, annoyed, bothered, or they do anything to you, meaning go away, I don't like you right now
*someone is making annoying noises* "Fall off a cliff"
by Evellia April 5, 2016
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When one person loses their train of thought multiply times during conversation because they fried their brain doing too many drugs. Also falling off the train in life resulting in not fulfilling their full potential.
You asked me that twice already, you really need to take better care of yourself because your falling off the train.
by Catirandafly October 15, 2016
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"How dumb do they think I am?" thought the new teacher as she surveyed her new pupils. "Do they think I fell off the turnip truck yesterday?"
by mozelle58 June 6, 2004
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v. to sleep with someone.

Other forms: falling off the roof, roofing, roofer (one who falls off the roof)
Hey, wanna go fall off the roof?

Don't you know Joe and Anna fell off a roof together?

Erin is such a roofer.
by M. Mills September 6, 2008
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