You did what?

1. What is "dipping"?
2. What are "pinches"?
2. What is "keeping a lip in"?

Are you taking about crack, or chewing tobacco? Because both are incredibly stupid. The lesions inside of your mouth could very well be the first signs of mouth cancer. Lay of the chew; not only does it make you look like an idiotic monkey, but it causes mouth cancer. You don't want to see some of the images I've seen.

Go to a mouth/throat/nose doctor. He can tell you if you have cancer yet or not, and maybe scare some sense into you.

Ya its chewing tobacco.. i'de never do hardcore drugs. But ya I dunno I just have these weird things in my mouth, but i was reading that sores can occur normally to so lets hope I don't have cancer ^^. Other peoples input could help 2

I don't know what it is, but it sounds like you're afraid of cancer. And for good reason.

You should probably look up the statistics for cancer and dipping compared to cigarettes. Then try to find stories and pictures of people who have had their jaw removed.

That is of course, if you're looking for a good reason to quit. Or just want to know the risks of activities youparticipate in.

It's called leukoplakia. Basically the tissue has started to change due to the chemicals. It is reversible if you stop if you don't your gums will migrate down making your teeth extremely sensitive and loose and you may already have beginning signs of cancer. Look for small irregularities that are a different color than the white patches.