black tongue

[fartmouth]

my tongue is usually white/ yellow/ or green coating. i use ora brush that somewhat diminishes the color. but i was sick yesterday had the runs which was like pure black water lol gross i know. But for the first time i noticed my tongue had a black coating!!! i was freaked when i saw this like WTF... feel alot better today and the black coating is gone. im totally stumped but its pretty hard for me to think that this was not a coincidence.