Acidity is a component of corrosiveness. It's simply either a proton or electron transfer depending on which definition. You can have other types of corrosives I should think; chemicals that eat other substances but aren't acids or bases. Reducers and oxidizers are different than acids and bases (but they do use electron transfer LEO/GER), dehydrators are also an example.
Question already asked by tylerchu. The answer still is; the content of your stomach is way more acidic, thus corrosive, than a soda. Here are some pH values (the lesser the value, the more acidic and corrosive):
Mountain Dew: 3.2
Sunny Delight: 2.4
The contents of your stomach: down to 1.5
I didn't think it'd work since it was a rat and not a mouse but now I'm convinced. they lied about the tail though it was pretty much all there and they said only a small portion would remain but whatever.
Mountain Dew: 3.2
Sunny Delight: 2.4
The contents of your stomach: down to 1.5
My.
God.