2 definitions by Nautilus

Top Definition
To fuck another person. This is a spin of lay the pipe, but in a much more poignant manner.
I was piping down this bitch last night when, all of a sudden, her roommate walked into the room. Then I piped her down too.
by Nautilus January 25, 2005
v. to have sexual intercourse with a female
I piped down this chick last night for three hours.
by Nautilus February 16, 2005

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