Theodotré's Bathroom Spider.

Discovered in 1883 by Hammond Theodotré. Found only in bathrooms of old houses. Due to the often damp atmosphere in bathrooms it's own web material falls apart. Instead the spider has developed the amazing ability to Build it's webs entirely out of the strands of hair that people leave after washing their hair. They are combined by using a complicated knotting procedure very similar to Macrame to form complex geometric shapes in the upper corners of the rooms. The resulting web is then covered with a mixture of the spider's own saliva and soap. This forms an incredibly sticky glue that snares the spider's prey. The saliva/soap glue does have the unfortunate tendency to dry out quickly making it necessary for the spider to constantly replace it. This may be why your soap disappears so quickly.