There is a dictionary website that translates various 'urban' slang into phrases that us honkeys can understand. The following is the defenition for the phrase, fo' shizzle my nizzle: 'fo shizzle ma nizzle' is a bastardization of 'fo' sheezy mah neezy' which is a bastardization of 'for sure mah nigga' which is a bastdardization of 'I concur with you whole heartedly my African american brother'