So yesterday morning i woke up and freaked out because my tongue was black. I brushed my teeth and tongue (as all of you should) and it came off so I wasn't too worried about it. Well this morning when i woke up I jokingly said let's see if it's black again...and it was...So I used my trusty Google skillz and discovered that if you eat those little Pepto-Bismol tablets...they turn your tongue black. Weird huh?