a 'spattering' or small fittle of excrement, usually on the face, would be known as a blemish, were it not excrement. Sometimes the product of a 'fartle'.
"When we went for that curry I don't think Mitch should've had the Vindaloo, there wasn't a dry face in the toilets after he'd finished, well actually I was making an overstatement, a couple of people had been excremished by the sheer explosive nature of his emissions."
by Daniel Crompton November 19, 2003