(Noun, Vulgar)
A deviant, typically of sub-continental origin, who derives particular sexual pleasure from the act of anally-violating females using his thumb (the opposed,
short,
thick finger with only
two phalanges).
"Sen, the Thumbed Crusader, came
home to de-
grease his favourite appendage following an active night of
thumb-crusading." {Modern - 2OTH C.}