the.com/ammo

The thing you buy more of than the gun that fires it.

means Short for ammunition — the bullets, shells, or other projectiles a weapon needs to actually do anything.

from A 20th-century clipping of 'ammunition,' which came through French munition from Latin munire, 'to fortify, to defend.' Soldiers, being soldiers, shortened it for speed — the same instinct that turns 'reconnaissance' into 'recon.'

origin
short for ammunition, itself from French la munition
economics
prices spike every election cycle, like clockwork
metaphor use
now means evidence in any argument, not just war
storage rule
cool, dry, dark; heat degrades gunpowder over years
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