An aircraft electrician serving the Royal Air Force.
WHY?
Because they do, there is an urban myth in the RAF that recounts a tale of an aircraft electrician that was caught having sex with a dog.
Pilot: I ave a problem with the NR indicator.
Line Swine: I'll get a dogfucker to come and have a look at it for you
Dogfucker: I.E, racist white people who like to pretend they are not zoophiles by projecting their own retardation on middle-easterners. In reality 99% of zoophile porn involves american huwhite wimen getting effed by golden retriever while their god-fearing, muslim hating husbands watch.
An example of dogfucker in IRL.
White guy: You sand-n####ers like to fuck goats
Middle-easterner: Hold on a minute, i googled white people fucking dogs and i saw your sister lisa-ann getting fucked by a bulldog.
White guy: FUCK YOU TERRORIST.
Dogfucker, means someone who likes to have sex with dogs. It usually refers to people from the so called "western world", also known as "free world" (because you are free to fuck animals) i.e. the countries in America, Europe and Oceania.