Never Say Die (1939)
"There's a cross on the muzzle of the pistol with the bullet and a nick on the handle of the pistol with the blank."
In "The Paleface" (1948), also starring Bob Hope, is another example:
"He draws from the left, so lean to the right. There's a wind from the east so better aim to the west. He crouches when he shoots so stand on your toes."
And in "The Court Jester" (1955), Danny Kaye, as the Jester, tries to memorize:
"The pellet with the poison's in the vessel with the pestle; the chalice from the palace has the brew that is true!" After the chalice from the palace was broken, this was amended to: "The pellet with the poison's in the flagon with the dragon; the vessel with the pestle has the brew that is true."