Nibble off a corner, then nibble the corner diagonally opposite, then use it like a straw dipping a nibbled corner in your tea/coffee. As soon as you get some through the biscuit you have to put the whole thing in in one go or it disintegrates! It's an Aussie thing.
Yup, that’s it. Done it several times. Used to do it a lot when I had a Aussie assistant, prob once a month she would bring some in.