I recently purchased a sex toy and have been enjoying it so much – a jelly-sleeve masturbator called the "anal tunnel." This is a soft jelly-rubber tube with one end shaped like an anus with a small, tight opening where you insert your penis. The tube is about 5 inches long, and the inside of the tube is covered in small soft senso-nubs (these are small rubber bumps that squeeze, grip, and slide over your erection once inside the tube). Of course, this toy requires a lot of lube. The jelly-sleeve is also a translucent blue color so you can see your penis sliding around inside it.