Niggas want catch me slippin' but I don't walk on bananas

from Meek Mill – Real Niggas Come First Lyrics on Rap Genius

Meaning

People want to catch Meek Mill off guard but he doesn’t have to walk on bananas in order to do it.

Slippin-to get caught off guard.

This is wordplay for slipping

Slipping (English Dictionary Definition)-slide unintentionally for a short distance, typically losing one’s balance or footing.

You can lose your balance if you walk on Banana Peels

EX:
http://youtu.be/Srg_htLLFMQ

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