Please, sir . . . can I have some more?
How about the preamble to the Constitution? It should only take 30 seconds. Use this "Schoolhouse Rock" jingle as a memory aid. I used to watch this cartoon as a kid and I still have the preamble memorized. It is cheesy . . . but effective.
Just, whatever you do, don't watch this episode of "Schoolhouse Rock", I don't think you would like it.
"Be of good comfort, Master Ridley, and play the man! We shall this day light such a candle, by God's grace, in England, as I trust shall never be put out."
--Hugh Latimer, October 16, 1555