Devil's Floss 

Somehow receiving red pubic hair in one's mouth. Often this would occur during oral sex.

From one woman to another. "When I was drunk I went down on this redheaded guy. I stopped and pulled a long fire-y out of my mouth. He laughed and said 'Got ya some of my devil's floss did you?' I looked at him and said 'yes! Why does it taste like peanut butter?'"

Devil's Floss by zjme October 18, 2009

Devil’s Dental Floss 

Your partners pubic hair when you’re performing oral.

My hygienist asked the secret to my healthy gums - “‘My husband has the best devil’s dental floss .”

Devil’s Dental Floss by Angry Scientist October 21, 2017