What is ceiling smear?

Just wondering, but some people talk about 'ceiling smear'. What is it? Does it degrade sound? How can it be corrected?

sh1020d1306-08-2001 4:31am

wirehead Details Discussions Posts This discussion Message User 140 posts 06-08-2001 at 09:36pm Copy Comment URL Report Comment Edit Delete Sdcampbell: But if the bagel sticks? Problem solved. Sound bagels.