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A moob is the opposite of a boom. When someone says something that they think is awesome or great but no one else likes it...or when someone lets you down, say in a softball game by popping up to the pitcher, that is a definite moob... Or if a firework or something loud is supposed to go off and people are waiting to yell BOOOOOOOM and its a dud..Moob....these examples are followed by a subtle Moob so that person realizes how sucky there action was.
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