Short for 'Jesus fucking christ what a pile of wank'. Used mainly to descirbe someones anger or discust at an event. Can also be applied to a person or any other object. Reserved usually for texts but can be used verbally.
: Alright mate, you go see that gig the other night?
: Ohh j.f.c what a p.o.w.
: Not great then.
: Nah mate