A common sign that means, contrary to popular belief, that it is illegal to drop off trash in the specified location. This trash may or may not include human fecal matter. This sign will never cease to amuse high school kids.
Joey: "Hey, guess what guys? Check it out! I just put up a "No Dumping" sign above the shitter in the boys' room!"
Marty: "HAHAHA!!! All right! Awesome joke! You da man!"
Kenny: "Yeah dude, that's totally rad!"
by Nick D August 13, 2004
7 Words related to no dumping

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