Also refers to male testicles (the left one in particular) which also gives the impression of annoyance.
Stop being a Fadi.
A counter-strike player who is very obese, and is extremely bad at CS. He smells like fecies, and has a brain the size of a pigeon.
May also be used to describe an event that is embarrassing and/or terrible.
ADJ: That person is so fadi with an awp, he just wiffed a guy in the back.
V: The guy just fadied. He fell off of the rafters on nuke and died.