Top Definition
An event or mistake that is so disastrous that 'fuck-up' isn't strong enough,so 'fuckfall' is substituted,as this shitty happening in your life is equivalent to a long fall down a well or off a rocky slope.
"Meeting and marrying that asshole was the biggest fuckfall ever."

"Lately my life has just been one big fuckfall after another."
by Thundercunt274 December 31, 2012

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