Top definition
A person who does not know how to play the game of marbles.
"Hey dude, lets play marbles."

"Alright, how do you play?"

"... Get out of my house, Marble Tard."
by Poptart Dave January 28, 2012
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Apr 28 Word of the Day
Literally everyone, ever. Including the writer of this definition.
by masokitsune January 17, 2019
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