The absolutely wrong way to eat a Zoo Biscuit:
Friendships have ended over less.
Everybody who's anybody knows that the first step in Zoo Biscuit consumption is to nibble the edges, like so:
Then (as a personal preference) I like to eat the biscuit off the back, whittling down to sugar only.
The next bit is where opinion's differ. Some people choose to lick the animal icing off the top at this stage. They are wrong. What you should do, is nibble around the white icing, gnawing the appropriate animal-shaped cut-out. Then you consume the white icing and sugar layer at your leisure.