Frankly, even though their "orientation" may not be the norm, these fundoshi-swathed torsos and abdomens still look incredibly luscious to me. In some cases, I've even grown to like them sideways -- my rotations of them somehow render them static. But, if it really bothers you, you can turn your computer monitor on its side and enjoy them in a more traditional, conservative manner.
In the process of posting these, some of the righted themselves! So they're no longer sideways -- you'll have to use your imagination ;)