1: Willy Wonka's magical river made of pure, home grown chocolate, running right through the heart of the Wonka Factory.
2: Your Rectum
1: (Augustus) "HMMMMM CHOCOLATE!!!!"
2: "Mate, i had a curry the other night, turned my asshole into a chocolate river!"
giving 100% commitment or attention to something, or even sometimes going over the top to acheive something. very british saying, known to orginate from london. possibly...
yeah that guys always giving it the charlie large one