Top Definition
When a person acts like somebody with a mental disorder at a certain point in time, but in fact is sane
Devon plays the bass guitar like a mucktard
by Muck April 16, 2004
A muck tard is a Clumsy dumb fool
A drunk on ice is a muck tard
by koho9 December 30, 2010
(n) What you call someone after they make a stupid remark. A mixture between a muckfluck and a retard.
Person: Do you think Pang Long has groupies?

BBI: WTF!? You mucktard!
by Beanerous Brokus I November 20, 2006

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