A bastardised version of "Fo' sho' nigga", which is a bastardised version of "for sure my nigga", which is a bastardized version of "I completely concur my african-american brother"
Is that your hoe? Nigga she fly.
F'shizzle my n'izzle
Term created by inner city youth expressing obvious agreemet, but eradicated from use once it was adopted by mainstream America as a parody of inner city youths.