Engine, engine number 9
Running down Chicago line.
If the train should jump the track, 
do you want your money back?
 
Played as a game, with 2 or more players in a circle:
Point to someone when you say 'back'. They must answer 'yes' or 'no'. You can reply either 'y-e-s spells yes and you are out' or 'n-o spells no and you are out'.