I must admit I find a sexual thrill in playing with them. I am in love with the way the knife glides along exposed flesh. How it takes just a little extra pressure to break through the skin, but once you are through it goes like silk. The pure red of the muscle as the track fills with blood, the slight catch of the blade as you pass through tendon. The hitch when you strike bone and glide along the edge. It is the most sensual dance imaginable, and I get wet even thinking about it. I can organism from the remembered feel of it alone. I nearly blacked out once from the pleasure as an arterial burst splashed across my face.