is that where it gets all sore in the cornors of your mouth and all cracked and it hurts when you yawn?
if its that, you're lacking in vitamins, i think it may be vitamin b.
eat a few vegemite sandwichs, or have vegemite on toast. it helps.
or take some vitamin b supplements.
before you go to bed, put a really thick layer of Blistex on your lips, and when you wake up, they will be smooth and kissable, leaving you free to try jumb's semen application idea...
and i think jumb's up for a trial...