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Yeah, That's the thought! You sabi am

OK, my turn to learn Nigerian, bugger

Yeah, and you will, no sweat.
'You sabi am' means you know it

so after you have taught me I will be 'You sabi am'

Lol! After you have learned, 'You go sabi am' (you will know it).
Then you can say 'I sabi am', that is, 'I know it'.
Referring to the future you can say, 'I go sabi am', that is 'I will know it'
All the other words are all English vocab. except sabi, which means, know

Sounds like Sabi come from, or became, savvy.

Probably so