What does purple monkey mean?

The entire phrase is "purple monkey dishwasher" and means a distorted meaning or fact altered by the imperfect communication of the spoken Word. (Related to the kids' game of "Chinese whispers" also known as "Telephone"- see related link) Example : "Bob said he had car trouble and the mechanic said he needed a new purple monkey dishwasher." (which is far from the original Words of the mechanic)