The Mikado by W.S. Gilbert of Gilbert and Sullivan

To sit in solemn silence in a dull, dark dock,
In a pestilential prison, with a life-long lock,
Awaiting the sensation of a short, sharp shock,
From a cheap and chippy chopper on a big black block!
To sit in solemn silence in a dull, dark dock,
In a pestilential prison, with a life-long lock,
Awaiting the sensation of a short, sharp shock,
From a cheap and chippy chopper on a big black block!
A dull, dark dock, a life-long lock,
A short, sharp shock, a big black block!
To sit in solemn silence in a pestilential prison,
And awaiting the sensation
From a cheap and chippy chopper on a big black block!

 
I believe the poem sounds like a nice tongue twister.