Top Definition
1. usually used by the homosexual crowd to represent they are willing and open to anal sex.

2. Usually means an anus that is "blown up" by too much butt slamming
Josh is rocking the grenade sticker and we all know what that means.
by lilgeek May 11, 2011
1 more definition
a sticker of a grenade usually put on a car window to advertise a willingness to homosexual activity
Every car at the gay bar has a grenade sticker on it.
by stupid ricer June 07, 2011

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