thicker than hair on a dog's back Share definition Flag Dogs have so much hair that they have to shed it a couple of times a year. Traffic in Atlanta is thicker than hair on a dog's back during rush hour. thicker than hair on a dog's back by Deborah Lee June 11, 2006 0 0 Get merch Get the thicker than hair on a dog's back mug. Buy Now — $32.95 See more merch
