Very obvious.
Person 1: the sky is blue
Person 2: no shit
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1. The cuss word
2.Feces/poop
3.Trouble
4.(Useless and/or Awesome)Stuff
1. Shit!
2.I need to take a shit...
3. We're going to be in some deep shit...
4a. Look all this shit! 4b. This is the shit!
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