I hate candy or food that changes my mouth different colors. (That's right....it's another post about candy). I refuse to eat anything that might make my mouth a different hue other than soft pink.
The absolute worst is the blue icing sometimes on birthday cakes. Not only changing the shade of the tongue, but also the teeth.
There is a black girl on American Idol that obviously has a piece of red candy (possibly a sucker) before she performs. Obvious because she opens her mouth really wide to sing some parts and her tounge has a dark maroon shade streaking down the center of it.
*spits*