Nobody, in the history of mankind, ever yelled a pun, running in a field, surrounded by corpses, holding a blood-tainted battle axe over his head.

Me, on why slogans should be inspiring

The word “slogan” originally derives from sluagh-gairm or sluagh-ghairm (sluagh = “people”, “army” and gairm = “call”, “proclamation”), the Scottish Gaelic word for “gathering-cry” and in times of war for “battle-cry”. The Gaelic word was borrowed into English as slughorn, sluggorne, “slogum” and slogan.

Source: Wikipedia