Looking for a super sexy (and vibrating!) butt play meets cock constriction piece? Nasstoys' Scrotum Massager Plus combines a not-so-classic, ball-snuggling ring with a tiny butt plug probe positioned for tons of sweet sensation.
The Plus fits snugly over the base of your/their penis and scrotum (or a dildo). The stretchy double ring holds tight, placing the curvy, contoured perineum ('taint) massager below. Below, the ripply mini plug flips up to your butt. Pop it in for ten rumbly vibration modes controlled with a button on the base or the handy remote.  
The pure silicone Scrotum Massager Plus is body-safe and easy to clean and care for. You can wash it with mild soap and water or use a favorite toy care fluid/foam, and it's good to go with any water-based lube you love. The Plug is rechargeable and waterproof. The USB cord you'll need is included. Fits most.