1 definition by RAndOm_PeRsON*^_^*

something you say to a person that bores you, but you want them to seem like you're actually interested in what they're saying.
Person 1:"hey did you know that plants go through photosynthesis? also they produce oxygen for us to breathe!"
Person 2:"really? that's so coolio!!!"
by RAndOm_PeRsON*^_^* October 28, 2009
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