I chickened out and couldn't do it myself. I got my wife to do it in the butt cheek. Didn't hurt a bit. One of the reasons I wimped out was the harpoon I have for a needle. 1.5 inches just looks like it's going to come out the other side. I was sitting there holding it over my quad just thinking, "What if I go all the way to the bone?" My quads aren't skinny, but there not Tom Platz size either. Is 1.5 too long for the quad? Maybe I'll get some 1 inchers next time.