It just doesn't sound very hygienic.

You know what I learned today? Apparently the Pre-Raphaelite painter Dante Gabriel Rossetti had a pet wombat named Top that he let sleep in the middle of his dining room table during dinner parties. (Even though wombats have no bladder control! Doesn't that sound like something Paris Hilton would do?) Anyway, Top's little naps were said to have inspired the Dormouse character in Lewis Carroll's Alice In Wonderland.