Cucumbers. Jello. Watermelons – these are all good examples. But they don’t actually explain why we don’t slosh. I would suggest that the key concept that answers the initial question (from a banned member – should I bother?) is that water is a polar molecule. Any given water molecule in the body isn’t associating with other water molecules to form liquid water. Rather, any given water molecule is associating with some other organic compound via the partial negative charge on the oxygen atom or partial positive charge on the hydrogen atoms.