Fuck me, the state of her tongue. Brown 
The brown tongue is often due to bacteria or yeast growth
And HIV+ persons, intravenous (needle/ injection) drug users are prone to this condition.
Although there are other causes for brown or other discolorations of the tongue such as,
Dehydration
Smoking
Drinking coffee or tea
Poor oral hygiene
Radiation therapy
What has caused this whores brown tongue, who knows?
but due to the bumpy surface visible in the vid indicates it’s a bacteria/yeast growth