Here's the version I know:

It's only a shanty in our old backyard,
The roof is so slanty, the seats are so hard,
It's hot in the summer, cool in the spring
But oh, in the winter, speed is the thing!
There's one hole for Father, another for me,
The third one's for Mother, the unholy three,
I sit all alone like a king on a throne,
In the shanty in our old backyard.