The magnetic orbitals are formaly orthogonal to each other, thus the spins are parallel, in accordances with Hund's rules. (I was just explaining this the other day)
Sausages are magnetic? They're naturally high in iron and the sausage-making process aligns the magnetic field. They link together through magnetism. Cooking enhances the field - you'll often find that your fork is strangely attracted towards a freshly cooked sausage.
If the magnetic orbitals are non-orthogonal, the unpaired spins are in effectively the same extended orbital, so must pair anti-parallel in accordance with the Pauli principle, which gives rise to antiferromagnetism. If the spins are unequal, a net moment arises, which is called ferrimagnetism and is the process ehind nearly all permanent magnets you'll come across. Guess what I do for a job...