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A name given to possible the coolest person you will ever meet. A mattsmart is someone who is not the best of a friend, but can allways make you laugh even when they are not trying to. A maatsmart can normally be defined as the kid who shows no emotion and over uses sarcasim.
Person1: Hey Matt, I had a great dimora with your mom last night! It was awsome!

MattSmart: Well then...

by willy 8146 March 20, 2009
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