What do you do if your adult tooth is grown in your mouth and half of the baby tooth is still hanging on to your gum its been hanging on for ages its not hurting but not coming out what do you do?

You can try wiggling the "baby tooth" (if it doesn't hurt to do so) until it is loose enough to come out - most baby teeth have very short roots.

If this doesn't work you need to see a dentist, the remaining baby tooth will cause displacement and over crowding of your new permanent teeth.