Once upon a time there was an engineer
Drove a locomotive both far and near
Accompanied by a monkey who would sit on a stool
Watching everything the engineer would move
One day the engineer wanted a bite to eat
He left the monkey sitting on the driver's seat
The monkey pulled the throttle, locomotive jumped the gun
Doing ninety miles an hour down the mainline run
Big locomotive right on time
Big locomotive coming down the line
Big locomotive number ninety nine
Left the engineer with a worried mind
The engineer called up the despatcher on the phone
Tell him all about his locomotive was gone
Get on the wire, switch operator to right
'Cause the monkey's got the mainline sewed up tight
Switch operator got the message in time
Said there's a northbound train on the same mainline
Open up the switch, I'm gonna let it through the hole
'Cause the monkey's got the locomotive under control