A shit in which when finished requires none or hardly any wiping,Thus being the kind of shit you`d want to have whilst on an S.A.S mission to save time and leave no clues to your where abouts.
i'm going for a dump dave hold the bus, don't worry it feels like it'll be an S.A.Ser
The meaning of "bear's service" originally comes from a fable about a man and a bear. The bear wanted to help the man by killing a gnat which sat on his forehead. As a result both the gnat and the man died.