Top definition
Extreme intensifier, usually unpleasant.

Of or related to the asscrack.
It is asscrackulously hot up in this attic, why did we have to move these boxes at noon?

You left your laptop on the bus? How asscrackulously stupid.

Seeing that jerk fall down the stairs was one of the most asscrackuloulsy wonderful moments of my life.
by Pete Cyclone April 30, 2008
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