Footling: Lacking importance or significance; trivial, worthless, inept, or stupid. Rhymes with tootling. Present participle of the verb footle, meaning "to trifle; to play the fool." Both words' earliest recorded appearance was in 1897.
Footling may resemble an innocent diminutive, but it ultimately derives from the vulgar French verb foutre, "to fuck." Foutre entered English as a noun meaning "a valueless thing" (as in "I don't give a foutre for it") whose spelling evolved into footer (again, long "oo" sound). Foutre in English is considered obsolete. In French it lives lustily on.
Recent sighting of footling:
There may be filmgoers who still harbor a footling prejudice against tales of Romanian abortion; in which case, here is the way to trounce them. -- Opening sentence of Anthony Lane's capsule review of 4 Months, 3 Weeks, and 2 Days, in The New Yorker, February 11-18, 2008.