The science writer Simon Singh wears a Mobius scarf (a neck scarf sewed together as a Mobius strip). Pretty easy to do if you wanted to. I'm guessing he's not

The science writer Simon Singh wears a Mobius scarf (a neck scarf sewed together as a Mobius strip). Pretty easy to do if you wanted to. I'm guessing he's not the only one but he's the one I've come across.