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n. The faculty which is required to complete basic manual tasks. Often impaired by hangovers, substance abuse, etc. One may have the concentration required, but not the functional ability, or vice-versa.

a portmanteau of functionality and concentration.

(also v. functiontrate)
I'm so fucked, I don't even have the functiontration to roll a cigarette.

I'd like to cook you breakfast, but I don't think I can functiontrate for long enough.
by number86 February 10, 2011
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