What Are Grenades In Jersey Shore?

What Are Grenades In Jersey Shore? According to Pauly DelVecchio, calling someone a “grenade” also meant the “unattractive friend” in a group of girls who would ruin a guy’s chances of hooking up with a woman. “There’s always one friend that’s great and there’s always that other, unattractive friend, so we call her the ‘grenade,’”