Squirt, squirt. Rising to the demand, Old Faithful is a realistic dildo with testicles that have an internal chamber. When you squeeze the testicles, your favorite lube oozes out. For the texture and visual, we highly recommend Oasis Silk or Sensuva Hybrid in the reservoir for that white semen-like color and texture. Because the material is plastic, any lubricant can be used including silicone. Fine for hand-held or harness use if the harness can accept testicles.