Grenade, an Army term for an Iron Ore Dispertion Device. The Mills No 36 being one of the more famous Grenades, which evolved from the No 5 and the No 23 Mills Grenades. The Mills No 36 was replaced in service by the L2 series and in turn this has been replaced with the L109.
When the pin is pulled, Mr. Grenade is not your friend
-A Reading from the Book of Armaments, Chapter 4, Verses 16 to 20:
'Saint Attila raised the Hand-Grenade up on high saying, "O' Lord, bless this thy Hand-Grenade that with it thou mayst blow thy enemies to tiny bits. In thy mercy." And the people did rejoice and did feast upon the lambs and toads and tree-sloths and fruit-bats and orangutans and breakfast cereals ... Now did the Lord say, "First thou pullest the Holy Pin. Then thou must count to three. Three shall be the number of the counting and the number of the counting shall be three. Four shalt thou not count, neither shalt thou count two, excepting that thou then proceedeth to three. Five is right out. Once the number three, being the number of the counting, be reached, then lobbest thou the Holy Hand Grenade in the direction of thine foe, who, being naughty in my sight, shall snuff it."'
-- Monty Python, "Monty Python and the Holy Grail"