Nail Pop x Dolls Kill Tough Cookies Nail Decals, are tuff as nails. These xXxclusive collaboration nail decals were conceptualized by Erin Hart just for you dolls. These BBZ are so easy to apply, just cut out the design you want and place it in water for 15-20 seconds, then remove from the water with tweezers. Slide off the paper backing, and place the decal on yer nail where you want it, then paint over a few times with a clear top coat. With tons of individually illustrated prints to choose from, including dermal clad unicorns, 3 eyed cats, the sign of anarchy, along with the middle finger and two finger tongue salute, you can give em all 5 and still tell em to piss off.