 It is said in Season 8 that Daphne (Jane Leeves (qv)) has lost 9  lbs 12 oz at the health spa. This is a reference/inside joke to the  fact that Jane Leeves was away on maternity leave, and her daughter  Isabellas birth weight was 9 lbs 12 oz. Therefore the amount of  weight that Daphne lost while being away from the show was the same  amount Jane Leeves lost while being away from the show as a result  of giving birth.