grenade sticker 

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.

grenade sticker by stupid ricer November 27, 2011

grenade sticker 

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.

grenade sticker by lilgeek June 5, 2011