Sour vs. Bitter

brrr, bah and yuck

Foto:
jcarter

When it comes to the topics of sour and bitter, the authority of interpretation is completely derailed. Is a grapefruit more sour or bitter? Is this now a bitter or a sour facial expression?
Questions that we have not been able to resolve definitively. This bitter truth makes me sour, but see for yourself:

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