Vaseline for masturbation. Step 3. In fact, you probably feel a combination of these feelings right now. Vaseline, or petroleum jelly, is an oil-based ointment. But try to get a water base lube. When you masturbate without lubricant you're gripping it tight and that's not the way most vagina's hold on to one. In fact, you probably feel a combination of these feelings right now. Hi, Pl. What underwear do you suggest? But how do I apply it? Hi, I've tried it and used it like this. Can i be taller in the future? Report Abuse. Step 1.