Misinterpretation of the spelling of clumsy. Commonly mistaken by those who are indeed clumsy themselves.
A general indication that a solid grasp of the English language is lacked. If symptoms persist, use a dictionary.
"Don't pick on my grammar! I'm not normally this 'clumbsy'." -irony.

"Yeah that guy's an idiot; he's always so 'clumbsy'!" -irony, once again.
by sM4c November 21, 2008
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Mistyping on a thumb style keyboard such as a mobile phone as to have "clumsy thumbs."
Oops! Sorry, I got a little clumbsy on that last text message.
by Ball Say February 26, 2015
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it means both dumb and clumsy
yea that dude ain't just dumb he also clumsy - man he hella clumbsy
by whaeverr July 28, 2017
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