faginerry
Based on the character by Charles Dickens in Oliver. When an item has been taken from a person or group to benefit yourself without them being aware. Faginerry should be performed without delibrate malice. More of an art than outright mugging. To be used in conjunction with rife.
The best example of Faginerry is when a certain group of 4 unlocked a certain tennis clubhouse. Tarnished the place with bare draw, and left without anyone knowing they were there. "Faginnery is rife!"