A phrase used to describe the unpleasant experience of sitting, prefferably in a place such as class, work, Church, or any other place in which stepping out for a moment is tricky and/or discouraged, all whilst fighting against the powerful and evil forces of an excessively-gasseous bowel movement. This may or may not be accompanied by some "prairie-dogging" or "turtling"; however it is best exacerbated by the presence of a wedgie. Sitting on steam may also be related to a phenomenon known as the "beer-shits", which is characterised by considerable bloating and/or the constant urge for defecation following a night in which an excessive number of beers have been imbibed; although such a relation is not necessarily a prerequisite.

When you eat dirt for the first time and leave your family to build a shack in the woods