A person who is inconsistent with work and is somewhat bothersome.Sometimes he/she will perform a random act(Example:sticking a pen into an outlet.)However,when he/she wants to appear intelligent,they can easily blow people with their knowledge.
Wow...Mrs.Doodlegagger is such a dequarto.She's been rambling on about her children for hours!
Coined by President Obama when jokingly greeting guests/press at the White House on 4 May 2009. It seems as if he wanted to say, "Quattro de Mayo" but mistakenly said, "Cinco de Quattro" which translates from Spanish to English as "Five of Four" not "Fourth of May.