A complete and utter twat, dickhead, plonker for whom the words 'fanny' and 'wanker' just dont elicit the right level of bastardness of said person by themselves but when put together it totally describes the person and their pointless existence.
A referee from Glasgow at an Old FirmDerby Game when "That ref used to go to St Mungos School, haw ref ya fannywanker the ball was out!"
The hypothetical man (often a sinistercharacter who decided not to go to boot camp) that is doing your girlfriend/wife while you are on deployment overseas.
Ain't no use in goin home,
Jody's got your girl and gone.
Ain't no use in goin back,
Jody's got your Cadillac,
Ain't no use in feeling blue,
Jody's took your checkbook too.