It could be a lot of things. The most common is a benign self limited problems called an aphthous ulcer. It could also be other things, some of which are serious, so you should let a doctor look at it.
leukoplakia
well they are green and lumpy on the outside and about the size of a softball. But on the inside they are white and they peel just like a clementine(sp?).
it is white and lumpy thats what she said
Adipose..which is fat.
Leukoplakia are white spots or patches that develop on the tongue or the inside of the cheek. Many people are affected by these white spots and they can easily be treated by your primary care physician.
The lumpy white clouds are called, Cumulus. Cumulus clouds are found in the lower section of the sky. They are often described as puffy or lumpy, they generally have flat bases. Cumulus clouds are generally less than 6,500 ft. Cumulus clouds may appear by themselves in a line or in clusters.
thrush
eat more green vegies like brocoli and spinach Perhaps your answer would have more validity if you used correct spelling.
Koplik's spots are tiny spots occurring inside the mouth, especially on the inside of the cheek. These spots consist of minuscule white dots (like grains of salt or sand) set onto a reddened bump. Unique to measles.
Add a little white wine and make fondue!
Yes on the cheek with a white girl
corsa 1.5 diesel lumpy at start up with white smoke from exhaust returning to normal after a couple of minuets