During Coitus, a male will insert his index finger into the females anus and collect feces onto his finger and nail. He next inserts the same finger into the woman's vagina then uses his feces covered finger to scratch the vaginal wall until it bleeds. Then inserts his penis into the vagina and uses the feces-blood combination as lubricant.
"That Hoe was so nasty she wanted a northern nail nipper. Tell you what, it was warm, squishie and very enjoyable."