"You know how I roll" = whatever

[Hillary Brown]

"How I roll" is roughly equivalent to "how I am" or "how I live my
life." Maybe "how I be"?

Dates back at least as far as 1995 in The Barrio Boyzz' "How We Roll":

This is how we roll
And were rolling like that
So honey's come in
Kick off your shoes and lay back
(Champagne, caviar, and bubble bath)

hb

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The American Dialect Society - http://www.americandialect.org