Vegas Lip

1. n. - the condition by which your upper lip, having been subjected to the arid, air conditioned, cigarette infused air of Las Vegas, combined with excessive consumption of alcohol and/or other substances dehydrates to the consistency of a flaky, shriveled raisin.

Dude, I tried to make out with this chick in the club, but the both of us had such a bad case of Vegas Lip, it was like kissing sand.