I thought about it a bit and determined that, no, this does not mean I have Möbius breasts. This is a good thing, I think: being able to poke the interior of human beings' chests is much less of a positive than being able to poke the interior of paper strips or undergarments.
Also, you are not allowed to cut down the center of it to see if two bras result, because at best they would each be half the size, and this is one of the times when size is more important than topology.