The Rice University Neologisms Database

To slide down a hill while sitting on a large block of ice. To slide down a hill while sitting on a large block of ice, typically done during hot summer weather as a means to cool off. The speaker probably chose to use zero-derivation because of the similar activity of sledding. Since the verb meaning ‘to ride on a sled’ is simply ‘to sled,’ it is logical to conclude that the verb meaning ‘to ride on an ice-block’ is ‘to ice-block.’