Oh, NO ... Not Vaseline. This is a job for Sliquid Silver Premium (silicone base) lubricant. Vaseline is "insoluble" which means when exposed to water and/or vaginal fluids it will not dissolve resulting in "rough pulling action" not "smooth gliding action." Silicon based lubricants tend to be a bit more expensive than non-silicon based lubricants, but the MAXIMIZED PLEASURE is well worth the extra cost,-- not to mention your lady's MAXIMIZED ORGASMS.