Nice nice!
The reason why I wouldn't recommend soda, especially Coke is because of this situation I had. The toilet was clogged so my friend and I used an auger. In the process of using the auger, the auger left black marks on the inside of the toilet bowl. Bleach wasn't that effective in removing those black marks. I then turned to the Internet for ideas. One suggestion was to fill the toilet bowl with Coke and let it sit overnight. I tried this method and surely enough the black marks were gone! This is due to the acidity of Coke! So imagine what the acid is doing to the insides of your body!