I'm fast as lightning bro
You better use your Nike's bro

from T.I. – What You Know Lyrics on Rap Genius


Despite his intoxication, T.I. is still lightning quick with his punches (and possibly pulling out his gun) so you’d better run along
In your Nike’s. Given the reference to lightning, he might also be saying that if you have the magic Nikes from this movie

you have a chance of beating him

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