Fully erupted wisdom tooth feels weird. No pain, just weird. I was curious so wiggled it with my hands bit its very hard. Should I worry?

Wisdom teeth. not always cause problems. If there is enough room they will usually come through like any other teeth into a useful position and cause no problems. Moreover, sometimes these teeth can be a valuable asset to the mouth when healthy and properly aligned. At your next hygiene appointment request panoramic x-ray to evaluate structures that are surrounding your wisdom tooth.