I've got a theory. Tell me what you think.
Spiderman had a sex-crazed brother with a few quirky habits and an eye for interior home-decorating. He was cast out by his family in order to protect Spiderman's heroic image from the cruel and overly-imaginative press. But, since it was difficult to determine the sex of a fly by the color of its curtain colors, this arachnid brother decided to go for humans instead. So, this mysterious, ex-spider brother swung from building-top to building, devouring female-looking apartment adornments (which, sometimes, included the females themselves.)
Ok, so the theory is a little shaky and more than absurd.
But, there IS a man who has been indicted on charges of raping 70 women in Hokkaido by entering their high-rise apartments, based on the flowery-ness of their curtains. (see this article )
Now, though I know better than to trust admissions of guilt made here within the Japanese justice system, I'll definitely believe Spiderman should he decide to step forward and make a statement against his crazy, building-scaling and wall-repelling bro!
(Sidenote: I wonder what color curtains Bionic-Woman had...)