Knowing how much my husband loves to have me scratch his back, I have grown out my nails to the longest I have ever had them. I run my nails down his back, leaving scratch marks all over. His entire back turns pink and red as I keep scratching. My nails are so long and strong that you can hear as I scratch his skin. My husband seems very relaxed as I keep making more marks all over him, playfully scratching as hard as I can.