I have hair in my mouth and gums what could it be?

Feels like hair in: You will have to go to a dentist to personally examine you in order to determine what you are feeling and correct it.

Black hairy tongue: There is a condition called 'black hairy tongue'. It is darker in smokers and tobacco users. It can be yeast, fungus or other conditions that require a visit to a dentist or oral surgeon. Better hygiene is important.

Black Hairy Tongue: Is a condition of the tongue where the filiform papillae elongate with black or brown discoloration, giving a black and hairy appearance. The appearance may be alarming, but it is a harmless condition. Predisposing factors include smoking, xerostomia (dry mouth), soft diet, poor oral hygiene and certain medications. Management is by improving oral hygiene, especially scraping or brushing tongue.