system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:  The urge to mess with cuts, sores, and burns inside my mouth

I burnt my mouth today, and I don't understand the urge I have to rub my tongue over the spot over and over again. It doesn't make it hurt any less, but it almost seems involuntary. What gives?
gpt
Your mouth is a certain shape and taste, your tongue has it well mapped out, it knows every little nook and cranny. When you get a cut or you bite your cheek or when you burn the roof of your mouth, the shape and the taste of your mouth in that area changes. The shape because of swelling, the taste because of blood or increased sensitivity in burned areas. And so your tongue keeps going back to that area to keep checking any new developments.

I dunno if you are too old to remember this, but when your milk teeth become loose, your tongue also played with them.