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used in reference to somebody who likes to spread gossip, or who cannot keep a secret
His ex-girlfriend told everyone that he had a small penis. When he found out, he just said that she had a big mouth.
by yorrick hunt January 23, 2008
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4
A show on Netflix about teenager puberty and shows child pornography.
How many times do the darn kids go nude in Big Mouth?!
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by DinoCoat October 11, 2018
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5
1. a great show for pedophiles to watch
2. a way to watch child porn without getting arrested
3. an animated show about a bunch of kids jerking off
Person 1: "How come Dale stopped watching child porn on his computer?"
Person 2: "He didn't stop, he switched over to watching Big Mouth."
Person 1: "Ohhhh, makes sense."
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by Dubiks October 14, 2018
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6
There are a couple different kinds ways to have a big mouth. Basically someone that can't keep anything to themselves.

One is the type of person that cannot keep anything secret.

Another is the sort that always shoots off their mouth to everyone for any reason. Such people tend to get themselves into trouble because they're always pissing people off. The type of person that in an argument will keep arguing and arguing far beyond the point where they've made their point and should stop.
A) Ack, don't tell him a secret. With his big mouth everyone in the world will know within five minutes!

B) This guy I know is always getting into fights because of his big mouth. He'll lip off to anyone for any reason and tends to take arguments a lot farther then any normal person would take them.
by Anonymous December 03, 2006
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