APHEFSDSHEATHECBC is an acronym for armour piercing high explosive fin stabilized discarding sabot high explosive anti tank high explosive capped ballistic capped round which is just a cool overpowered round for a tank invented by tank fish
(DISCLAMER: this is not real, obviously)
Driver: GunnerLoad the uhhhh... APHEFSDSHEATHECBC round.
Gunner: What?
Driver: The armour piercing high explosive fin stabilized discarding sabot high explosive anti tank high explosive capped ballistic capped round.
Gunner: What?
Driver: Never mind just fire
To engage in marital relations with your significant other while moving up and down in a smooth, fluid motion as if riding the merry-go-round at a local theme park or carnival. Usually performed by red-headed men over 50 with crooked clam hammers.