Yeah, I've got more records than the K.G.B
So, uh, no funny business

from M.I.A. – Paper Planes Lyrics on Rap Genius

Meaning

M.I.A. boasts that the police keep more files on her than the KGB kept in total (and as the secret police of the totalitarian Soviet state, suffice to say the KGB kept a lot of records), or alternatively that she’s sold more records than the KGB kept.

“Funny business” is also doing double-duty, implying both that you shouldn’t mess with her, and that she’s a serious businesswoman.

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