3 definitions by mcbain

1

Ancient Chinese Secret, Information that is confidential.

When asked for the for the secret formula, I replied "ACS"

by mcbain February 07, 2002

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2

Yo that nugga is ripped.

by mcbain September 16, 2003

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3

Un-Identified Party Injury, Mysterious injuries discovered after a a period of intoxication.

This morning, I woke up with a UPI on my leg.

by mcbain February 07, 2002

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• © 1999-2021 Urban Dictionary ® • advertise • terms of service • privacy • dmca • bug report • help • blog • data subject request