I decided that I am going to make my boy wear a butt plug from time to time, while doing housework or running errands or maybe when we go out to dinner. Not wanting to do any damage, I started with a small one. It wouldn't stay in. I tried a few other designs, but had similar success. The problem was that there was not enough taper. The "neck" was almost the same size as the widest part. I went up to a larger sized one that was 1.5 inches in diameter. It has a nice tapered neck, but it's really just too large to fit. I've been sitting here for about an hour online looking for a better one. I need one that is about 1 1/4 inches in diameter at the widest point with a very small neck so that it will stay in. Any recommendations?