Feygeah is like an extended version of Fagger (the true meaning of Fagger) and is commonly used in events of describing something bad. Feygeah is much more deeper than other "sworewords" like fucktard or gay etc. This is in an dimentional level much more harsh.
(KaZe) Ey Thom! im posting that picture of u and ur emo hoe right now....
(Thom) U fucking Feygeah