You can drink vinegar, but you can't drink diluted forms of other acids, such as battery acid. Here is the explanation for why it is safe to drink vinegar.

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Answer: Yes,soda damages your teeth. Drinking a carbonated beverage is actually one of the worst things you can do for your dental health. The reason is because the carbonation that makes soda bubbly also makes it extremely acidic. Many sodas also contain citric acid, which gives the drink a tangy flavor, but destroys teeth. It's a one-two punch with sweetened sodas, because the low pH attacks tooth enamel, while the sugar feeds bacteria that cause decay. You're not off the hook drinking diet soda, because it's mainly the acid in soda that harms teeth.