Hapax legomena

Priceless coinage, the opening lines of “How now, sirrah? Oh, anyhow:”

Oh, sometimes I sit around and think, what would you do if you were up a dark alley and there was Caesar Borgia,
And he was coming torgia,
And brandished a poisoned poniard,
And looked at you like an angry fox looking at the plumpest rooster in a boniard?

—Ogden Nash