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No.
When I die, pour coffee onto my coffin and bury me with freshly grounded beans.
This actually is not true. While coffee is slightly acidic, other common foods or drinks are much stronger. Coffee is about equal to applejuice in terms of acidity, while orange juice, tomatoes, and soda pop are all more acidic. While there are a lot of organic acids in coffee beans, most of them are very tightly bound to the grounds, and don't end up in the brew unless you start with have relatively alkaline water (but you still end up with the same acidity at the end, more just dissolve to cancel out the bases already present in the water). However, many coffee compounds capable of irritating the digestive track are far more soluble in high pH water, so putting a teaspoon of vinegar or lemon juice into the water you brew with (before it touches the grounds) will actually result in a milder brew.
