A combination of G and Yeah. Widely used by GangsterRapper MC 8 of CMW(Comptons Most Wanted) since 1988... Gyeah!!!! - See definition for YEAH as well.
** Opening Lyrics to MC 8's song "Automatic" from the album "Section 8"
(intro)
"Gyeah"
Hoo-bangin in the house c'mon
"Gyeah"
Eihthype in the house c'mon
"Gyeah"
And i'm representin
Real compton city g's on this one
My niggaKay Neeze in the house
We gon set it off like this