PAKI is short for Pakistani, black Americans can still refer to themselves as niggers, white Americans can't. Spics are Hispanics, Welsh are taffs, Brits are referred to as poms by the Aussies, Limeys by the yanks and roast beef by the French. We return the compliment by calling them frogs.
I would love to be there next time you use these insulting terms to somebody's face. But not only being a racist but a coward too, I doubt you'd have the balls. Try calling your next hispanic crew member a Spic and see what happens. If they report you it's the door, simple as that and deserved too. Harry, when you're in a hole stop digging and stop trying to justify being a complete idiot.