Although it sounds like a sneeze, the word askew means lopsided or turned and tilted to the side. Like your glasses might be after, well, a sneeze.
Anything askew is crooked. The word askew probably comes from Old Norse for "on a skew," or "to turn aside." No matter how you look at it, anything askew is at an angle. If a picture is askew, you might tilt your head to look at it, and if the books on a library shelf are askew, a conscientious librarian might tidy them up.