1 definition by jizzytissues

A cleveland steamer but performed in the Lake District, UK.
The art of one person excreting onto someones chest and then rocking backward and forth in a rocking horse motion thus smearing faeces all over the target area.
Managed to get an Ullswater steamer on our lass last night eh lad
by jizzytissues July 1, 2018
Get the ullswater steamer mug.