it is not a good idea to use Moreover, as the anal region contains sensitive nerve endings, it is a bad decision to use Vaseline for anal sex as. THIS IS SIMPLY THE BEST ANAL LUBE I HAVE EVER USED. your parterner if the idea of a super-thick anal lubricant sounds good to you or him/her. Petroleum jelly and vegelatum are thicker yet, but not sold as lubricants, and who wants. It's ideal for chapped lips and dry skin, but tends to be thick, sticky, and gummy as a vaginal lubricant.” So, no, Vaseline isn't a great idea. It isn't.