Father Claatmass

When one engages in a rough session of anal sex after a large meal, freshly digested faeces naturally follow their exit route, therefore painting one's penis with a lavish brown coating. You then proceed to extract the penis from the depths of one's rectum and paint your other's face with it, giving them a bomboclaat Father Christmas style beard.
Note. This can be used with Menstrual Waste to produce the Irish Red Bearded Lepraclaat .

Me and My Missus had a dirty night the other night. I ended up turning her into Father Claatmass.