Acts of vandalism, mischief, juvenile behavior, pranks and various misdeeds. Usually the perpetrator of these acts can later be referred to as "_____, that motherfucker...". Motherfuckery in this sense is typically committed by a person who finds these deeds to be humorous.
Pantsing fat kyle and then hitting him in the crotch with a pie, so he can't pull his pants up afterwards, would be the best motherfuckery this shitty city has ever seen.
by Sethdood February 05, 2011