Do you know why we sometimes bite our own inner lips?
The old folks would say it's heatiness that causes the lips to
swell, hence you tend to bite it.
But when I bite it, it's like a sudden, reflex action that causes
me to give a hard bite during chewing, so it's not like the lips
had been swollen/bulging and waiting for me to bite into it.
After the bite, it becomes an ulcer and can heal by itself. But can
it get infected?
