My favourite childhood poem was (still is) Pimpernel Petroleum, especially when read with a scottish accent. I probably developed my ability to mimic accents by trying to recite this poem with an authentic lilt.

Pimpernel Petroleum is a bold bad bus
Who doesnt care for travelling from Glasgow to Luss
Pop goes her engine crunch go her gears
Her passengers are sitting with their fingers in their ears
Pimpernel Petroleum loves to make a fuss
Because Pimpernel Petroleum is a bold bad bus.

Her driver Percy Poddle is a kind wee man
Who talks to her politely as often as he can
He's careful with her steering wheel and gentle with her brake
And whispers to her Pimpernel be good for goodness sake
But Pimpernel Petroleum is a bold bad bus
Who doesnt care for travelling from Glasgow to Luss
Pop goes her engine crunch go her gears
Her passengers are sitting with their fingers in their ears
Pimpernel Petroleum loves to make a fuss
Because Pimpernel Petroleum is a bold bad bus.

Pimpernel's conductress, Miss Fanny Freda Frisk
Is exceedingly efficient but very bright and brisk
She said we've had enough of this sentimental stuff
What Pimpernel is needing is a driver who is rough
But driver Percy Poddle is a kind wee man
Who talks to her politely as often as he can
He's careful with her steering wheel and gentle with her brake
And whispers to her Pimpernel be good for goodness sake
But Pimpernel Petroleum is a bold bad bus
Who doesnt care for travelling from Glasgow to Luss
Pop goes her engine crunch go her gears
Her passengers are sitting with their fingers in their ears
Pimpernel Petroleum loves to make a fuss
Because Pimpernel Petroleum is a bold bad bus.

One morning at the corner Pimpernel got stuck
Perhaps it was on purpose perhaps it was bad luck
Sat across the roadway wheels upon the grass
Lots of cars were coming but not a thing could pass
Pimpernel's conductress, Miss Fanny Freda Frisk
Is exceedingly efficient but very bright and brisk
She said we've had enough of this sentimental stuff
What Pimpernel is needing is a driver who is rough
But driver Percy Poddle is a kind wee man
Who talks to her politely as often as he can
He's careful with her steering wheel and gentle with her brake
And whispers to her Pimpernel be good for goodness sake
But Pimpernel Petroleum is a bold bad bus
Who doesnt care for travelling from Glasgow to Luss
Pop goes her engine crunch go her gears
Her passengers are sitting with their fingers in their ears
Pimpernel Petroleum loves to make a fuss
Because Pimpernel Petroleum is a bold bad bus.

There are more verses, each getting longer as they repeat the previous verse.