It's part of the master/servant thing going on here which makes one feel so uncomfortable. The idea of "honking' for someone to come and run around after you seems rude, no matter how much you tip them. I hate going to gas stations where I can't self serve, and the terms 'maid', 'maid's room' and 'houseboy' make me cringe too.

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"There's this thing called being so open-minded your brains drop out". - Richard Dawkins