Somebody is my guest, in a spacious room with a spacious bathroom. As I'm showing them around, I lift up the front half of a white towel that is on the rack in the bathroom, and notice that there are dozens of spiders on the inside of the towel, apparently living there undisturbed. They scatter into the folds of the towel, and I run to get the vacuum cleaner, but when I return I can't find any of them.