Lip cut things.

[RedStratocas]

should help!

[Immenseman]

i had one the other day for the first time, hurt every time i ate lol

[Crimson]

Dry, chapped, lips.

[LoveToStack]

If it's just dry lips, often happens to me in cold weather too, then get some of this; (Even though it says it's for cold sores, zovirax works better for them, and carmex for dry lips)



If it's a coldsore then get some of this;

[Jonster]

Thought I'd follow suit and post the same answer another time after you've read the previous 10.

It's most likely a cold sore. Just go to any pharmarcy and pick up some Vaseline, or Zovirax. Both work as well as each other.

[Kent]

apply some lube to your upper and lower lip. Good old lube!!

[Jordy]

Apply lots of salt...

Don't do that, but I do suggest Vaseline, I've had a cold sour on my lip for around 3 years, I can't go a few hours with out applying some.