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.