(n) slang for nitrous oxide
let's all do some dumb!
作者 pandora 2005年4月19日
you. (because you ACTUALLY had to look this up)
they laughed at him for an hour because he
told them that he had to look dumb up on urbandictionary.com
作者 Karen C. 2005年7月06日
Jake Anderson, a stupid mexican kid.
Jake is so fucking dumb!
作者 William Shat 2008年1月05日
adj. More then likely you are DUMB because you had to waste a few brainwaves and time to look up the word. The word is often written dum because the person is too ignorant to be able to spell an easy word or they don't realize that it has a silent b like comb.
You are dumb for looking up dumb on urbandictionary. com instead of doing it secretly in a library.
作者 sgkitty 2005年2月03日

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