Related:

• The camel has a single hump; The dromedary two; Or else the other way around.
  I'm never sure. Are you? -- Ogden Nash...
• The camel has a single hump; The dromedary two; Or else the other way around.
  I'm never sure. Are you? -- Odgen Nash (1902-1971)...
• Marge: [watching Lisa show Maggie flashcards] What's a zebu?
  Lisa: It's like an ox, only it has a hump and a dewlap....
• Ivensky: "My grandfather was a pole." Woddy: "North or South?
• What's big and green, lives in a swamp, and has an IQ of 140? A platoon of marines.
• What's brown and sticky? A stick!
• An Englishman is a man who lives on an island in the North Sea governed by Scotsmen.
• My aunt's lost it. Says she has what's-his-name's disease