Tobias Bell from South Central L.A. — the guy who was recently captured on tape getting into fist-to-cuffs with the big bad Suge Knight — claims that the fight started after he asked the former Death Row CEO whether he killed Tupac … And that’s when Suge flipped out.

But according to T.B. (the alias Bell goes by), he was completely caught off-guard by the sudden outburst — and now he wants to settle the score … for good.

T.B. tells TMZ he’ll take Suge anytime anywhere — “Staples Center, L.A. Live, wherever” — and this time … he’ll be ready.

To watch “T.B.” almost get “K.O.’d” click here.

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