Look at that thing. It blows my mind...what you put in it...is also outside of it. I'mma knit the Klein bottle beanie.
it's a klein bottle it doesn't work in real life, as real life is 3d a klein bottle is a 4 dimensional object kind of like a mobius strip you start on one side and end up on the other it's pretty confusing, i did my precalculus project on the hypercube, which is also four-dimensional god that hurt my head