Although Technically It wasn't a grenade, If you threw it the bomb would come loose, drop off, and more than likely stick to your feet. I think there was a Dad's Army episode where Corporal Jones throws one and it happened. Fortunately it was a Dud. You where supposed to creep up on the tank and slap it on the back.

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Patriotism is where the love of your country comes first, nationalism is where the hate of other countries comes first.-Charles De Gaulle.