A cawtionary tale

The Raven king Called to tea Arrived without a gift Blaming it on the economy he claimed to be short shrift The coffers low he cawed in woe Explaining away his faux pas Yet his diadem Not last years our hostess plainly saw Oh well what to do Is it one lump or two And you really must try the cake Despite the manners So sadly lacking He was such a stylish rake An ornament to any event You had to allow him that It was only this and nothing less That Kept her from calling the cat