A quite remarkable event
Looking for something to keep her occupied while she finished her bowl of Shredded Wheat Fruitful, she turned on the television. Imagine her surprise when she chanced upon an episode of Friends which she had never previously seen. Initially, she suspected that her apparent unfamiliarity with what was happening on the screen must have resulted from the confusion engendered by her unusually low blood sugar levels. But, by the time she had finished her bowl of cereal, she was forced to conclude that she had genuinely never seen it before.
Given that it is generally possible to turn on Channel 4 at almost any time of the day or night and be faced with an episode the script of which one could probably recite from the opening to the closing credits with no appreciable mental effort, Lady Bracknell is astonished that this one episode could have slipped through the net.
(This is not to say that Lady Bracknell is particularly fond of Friends: but she finds it sufficiently anodyne to serve as inoffensive background noise when she is weary.)