Perhaps most popular among cops is the rear compartment, which is sealed off from the front and made entirely of seamless, washable plastic, with drain plugs in the floor.

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An enterprising vendor covered a street drain with plastic sheeting and charged one real (50 cents) for the privilege of the privacy.

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About 20 people, in pairs or in groups of three, chained their arms together inside sections of drain pipes and other plastic tubing and lay down on the road in front of the north gate, while eight other people did the same at the south gate.

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You'll also have small, plastic drainage tubes under your skin near your incision to help drain any fluids that accumulate.

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