A person (normally applied to masculine
humans, and pets, and less so for females) who believes, in their tiny little warped minds, that they are doing something
amazing and a good deed for
society but are, in actual fact, being a complete and utter arsewank.
Unemployed middle-
class nobody: "Today I am going to glue myself to the M25, one of the busiest motorways on the planet, because I want my loft insulated for
free"
Irate motorist: "I swear to god I am going to twat this
fucking dickwad"