Top definition
Sentence mostly used to show surprise. However, it can also be used to show impatience.
Surprise:
John: Guess what! I'll get a Xbox 360 tomorrow!
Joey: No kidding! You'll invite me over to play, won't you?

Impatience:
John: Guess what! I'll get a Xbox 360 tomorrow!
Joey: No kidding... You already told me that like 1000 times.
by JamesT-Z May 23, 2008
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