Usually considered 'rude' used to tell someone to be quite. Sometimes, shut up is used to express amazement, even if the person it is being directed to is not talking.
"Shut up Meg."
-Peter Griffin
or
"Shut up!"
"I didn't say anything..."
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like a inside joke
no one is talking at all and then u tell them shut up
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What you say when your losing a argument
your losing the argument kid
other kid shut up
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something the pussy dragon satan can't do
One thing lucifer, that fukn pussy never has been able to do is just learn to shut up, and realize no one wants to hear his shit
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Another way of saying, "you've won the arguement, but I'm not going to admit it".
Girl: Why are you speaking in a French accent?
Guy: Because I'm speaking French...
Girl: Shut Up.
Guy 1: That girl is such a slut!
Guy 2: No she's not; she's had one boyfriend in the past year and didn't even have sex with him
Guy 1: Shut Up.
Wife: Do you want the big half or the small half?
Husband: That's impossible as two halves would be of the same mass, so a larger/smaller half is not possible
Wife: Shut Up.
Student 1: From now on, If anyone comes into this lesson they are marked as late
Student 2: I don't think that's your decision to make
Student 1: Shut Up.
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The act of shutting your fucking mouth in the past tense firm
The sophomores shutted up because we, juniors, hate them and we made them.