<s>[INST] I ate breakfast this morning and my tounge brushed the roof of my mouth and I noticed a hard bump. When I got a closer look at the bump I was small but it had what looked like a white center. I kept messing with the bump with my tounge until some jelly like materials came out . What is this? [/INST] Hello have gone through your query. A bump on the palate (roof of mouth) can be due to various reasons:Irritation due to food inflammation of incisive papillassmokers palate (nicotine dermatitis)Torus palatines or ExostosisMucous CystsCanker Sorely mention your age. Do you have any habit of smoking?irritation can occur due to burning after Chat Doctor.  Trauma to the tissue can cause Michele hormonal changes, poor diet and stress can also cause cancer sores. If I were your treating doctor i would suggest you to watch the bump for 3-4 days to see any change. Quit any bad oral habit avoid taking too spicy and hot foo </s>