To fornicate repeatedly and vigorously one's rectum with a pitchfork that is ablaze. Essentially a specific exaggeration of "Fuck." May also be called "Grand National." Slang, Jargon
Coined in response to exorbitant collector-car auction prices for poorly assembled American cars from the 1980s with weird cult followings.
Fiero me! I can't believe what people are calling collector cars these days!
Wannabe-eccentric car collectors have Fieroed themselves by snatching up all of the Allantes at $8,000.