Instructions on how to use the Holy Hand Grenade of Antioch
  1. And the Lord spake, saying, First shalt thou take out the Holy Pin.
  2. Then, shalt thou count to three, no more, no less.
  3. Three shalt be the number thou shalt count, and the number of the counting shalt be three.
  4. Four shalt thou not count, nor either count thou two, excepting that thou then proceed to three.
  5. Five is right out.
  6. Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who being naughty in my sight, shall snuf it.

Remember that time in that special Girls und Panzer episode where the girls from the Rabbit team spammed the word ‘spam?’

It turns out that it was parodied from a Monty Python sketch, which makes it even more awesome.

They got the vikings with their horned helmets, boat and everything! XDD

4

King Arthur: The Lady of the Lake, her arm clad in the purest shimmering samite held aloft Excalibur from the bosom of the water, signifying by divine providence that I, Arthur, was to carry Excalibur. THAT is why I am your king.
Dennis: [interrupting] Listen, strange women lyin’ in ponds distributin’ swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony. Well, but you can’t expect to wield supreme executive power just ‘cause some watery tart threw a sword at you! I mean, if I went 'round saying I was an emperor just because  some moistened bint had lobbed a scimitar at me, they’d put me away!

Monty Python and the Holy Grail (1975)