Gritty Grease

Re-using anal oozings (a mix of cum, lube, rectal mucus, and fecal debris) as lube for anal sex. The fecund mix is gritty from particles, causing discomfort to both parties as well as often being foul-smelling.

I blew my load in her ass but she was so hot I stayed hard. I wiped up some of her gritty grease and gave her another pounding. It was all good but it hurts when you get it in your jap's eye.