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a horn that used by a guy to warn other guys know that a grenade (ugly chick) is in the area.
Thank God Paulie sounded off the Grenade Horn so I could hide from her before she saw me.
by kidlou January 23, 2011
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Aug 11 Word of the Day
You can tell by the way she walks, she got that WAP.

You can look at her face and tell she ain't got that WAP.
by Black Don August 06, 2020
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2
A horn that alerts all of Seaside Heights that there is a grenade walking around.
I spotted a grenade walking towards the club, so I immediately grabbed the Grenade Horn to warn all the club patrons.
by ThePerfecttSet January 21, 2011
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