The whole thing is like the world tuned upside down:
If buttercups buzz'd after the bee
If boats were on land, churches on sea
If ponies rode men and if grass ate the cows
And cats should be chased into holes by the mouse
If the mamas sold their babies
To the Gypsies for half a crown
If summer were spring
And the other way 'round
Then all the world would be upside down