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A fumb duck is a particularly stupid breed of dumbfuck. Its name comes from fucking up the insult 'you dumbfuck' where the insult obviously backfires.
Megan is a fumbduck.
by Beepo_girl May 11, 2006
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opposite of dumb fuck .. but this one sounds more funny!!
invented by a brilliant guy i guess

You fumb duck , you !!
by thesmoke September 28, 2006
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The majority 99.999999999% of people who twitters also know as a dumb fuck.
I hate FumbDucks they are soulless idiots with no lives. I have yet to see a useful tweet or found a twit who can show me a useful tweet.
by Xannieria April 02, 2009
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