In my country Coke is used by plumbers to unblock drains and pipes. Just knowing that has always discouraged me from drinking it.
Unless you're a little backed up...
This sounds like the old "Leave a penny in a glass of Coke for 12 hours and it starts to dissolve." saw. Apple juice will do the same.
Not that I'm a fan of Coke, I rarely drink it. Although it IS great for an upset stomach.
A million times this. I was ill for a long time. Coke was the only thing that settled my stomach.
I'm not sure why knowing that would discourage you. I'm sure stomach acid would be even better at those tasks, yet your body handles it just fine. Vinegar is great at getting hard water spots of paint. That doesn't mean I stop dousing my fish & chips in the stuff.
Stomach acid is pretty awful on your mouth though. And you would never drink raw vinegar.