Pair of skates.
Hole in ice.
This Little Willie appears to be an adaptation of an existing verse (emphasis added):
Dunville, Thomas Edward (1868–1924), eccentric English comedian who as a young man went to London with a small provincial troupe of acrobatic entertainers. He made his first solo appearance in 1889, and was seen at Gatti’s-Under-the-Arches and the Middlesex Music-Hall with immediate success, soon becoming well known for his short comic songs consisting of telegraphic phrases delivered in an explosive manner in the style of ‘Little Boy, Pair of Skates, Broken Ice, Heaven’s Gates’. “Phyllis Hartnoll and Peter Found
The Concise Oxford Companion to the Theatre