Yep, wet petro jelly would be the right stuff. Just squeeze out about 1/4 inch or so and put it on your tongue and leave it there. Don't swallow it, just let it spread around. As I said, it's really helped me a lot.

David R. 65 yr old male non-smoker, light drinker, stage 3 or 4, depending on which doc you ask, scc rt. tonsil, 2 nodes, 7 weeks radiation and chemo. No surgery. Teatment ended 3/20/08. PET scan 8/08 showed no cancer.
And now, as of oct, 2010, caregiver to wife, Linda, with breast cancer.
May, 2013, Linda diagnosed with stage 3 ovarian cancer. Enuf already.