If memory serves, it’s Usually short for “opposition” - anyone you’re against or beefing with, effectively.

O.P.P., how can I explain it? I’ll take it, frame by frame it, to have y’all all jumpin’, shoutin’, sayin’ it. O is for “other,” P is for “people,” scratch your temple. The last P, well, that’s not that simple, huh

Ontario Provincial Police.

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original poster