The Emperor is hit so hard that he falls on the backside of his horse, (creating a pun on the word "ass"), and says: "It should happen to Hitler." Sure enough, the next scene cuts to Hitler, who gives a speech by saying: "B.O!" ("body odor", a reference to a Lifebuoy soap commercial).
Lifebuoy |
According to the Oxford Dictionary of National Biography, Grant's other inventions included "a naval fuel (briquettes known as Grant's Patent Fuel), a steam kitchen, which was given its first trials in the warship HMS Illustrious. He also constructed a new type of lifebuoy, and a feathering paddle wheel."