Just took my cup of coffee, which in turn left my tongue stained brown/black, Here is a new mouth tour video right before I brush my teeth and the stained tongue, I recently developed the pink patches all over my gum area and inner cheek, Don^t know what it is, My tongue, stained dark with the remnants of the coffee, stands out against the pink tissue of my mouth. In the video, you can see the pink patches on my gums and inner cheek, The cup of coffee has left a dark, murky film on my tongue, staining it and making It stand out starkly against the pink of my gums and the white of my teeth. As I open my mouth, the camera shows a close-up of the discoloured tongue, with patches of pink where the coffee could not reach. When I lick my lips, I can taste the lingering bitterness of the coffee, my tongue feels rough and dry, with a slight stickiness from the coffee residue. my teeth also feel slightly coated and gritty The coffee left behind a dark and ominous stain on my tongue, a stain that would soon be scrubbed away as I explored the depths of my mouth in a new video.