One of the Egyptian-themed papyri in our den has slipped so that it is crooked within its frame. This highly offends me. However, it's one of those special double-sided frames, and I'm not sure I could get it back together again if I took it apart.
In a fit of pique, I tilted the frame so that it hangs crooked, and the papyrus is straight. By happy fortune, the angle of the frame comes very close to matching the slope of the ceiling.
I can live with that.