Cobbler’s Buckle
When receiving felatio from a partner. The giver will be squating in front of you. In the heat of the moment they defecate onto your shoe. Would stain and leave a brown mark. Resembling a Cobbler’s Buckle.
So after she finished. I looked down and she’d done a shit on my shoes! Had to spend the rest of the evening with a Cobbler’s Buckle on my brand new shoes!!