Ah!! It all makes nonsense now!!
"fo shizzle ma nizzle" is a bastardization of "fo' sheezy mah neezy" which is a bastardization of "for sure mah *****" which is a bastdardization of "I concur with you whole heartedly my African american brother"
http://www.urbandictionary.com/defin...zzle+my+nizzle
[ame="https://www.youtube.com/watch?v=M9Bf_vmfiwA"]Snoop Dogg Fizzle My Shizzle (Best Version) - YouTube[/ame]