The Dink Network

Personified conduit of food and drink = a waiter/watress, who like to be tipped with money. Taking the word 'tip' differently, there is something known as 'cow tipping' where some people like to tip cows on their side, with the idea that they won't be able to get back up.

A cow is usually white and black, so it is not white or black, but both.

There were a couple other hints in dialogue choices, too.