rug burn Share definition Flag A rash or red mark on one's body caused by the friction of one's skin rubbing on a carpet or rug. Often happens during the act of sex or play. "That chick had on so much blush it looked like she had rug burn on her cheeks." rug burn by Anonymous September 8, 2003 0 0 Get merch Get the rug burn mug. Buy Now — $32.95 See more merch