Keats and Chapman in The Land of the Pharoahs

Whilst on a tour of the ancient and splendid sites and sights of Egypt, Keats & Chapman were befriended by a local guide who went out of his way make their visit as interesting and comfortable as possible. However, as time passed it appeared that the guide's mental state was not the full Egyptian shilling. He was obviously in the thrall of past experiences which constantly haunted him yet to which he would not admit. These phantom experiences gave him great grief. He had also made himself aware of Keats' work with the great psychoanalyst J G Stückebroitell and this seemed to be why he was being so helpful to the pair. His constant attentions began to grate on Chapman who thought the fellow should just accept past experiences and move on.
One day whilst on the river the friendly guide fell over the side of the boat and was floundering badly whilst screaming that he couldn't swim. Other guides on the boat insisted that he could and had been seeing conducting a rather elegant breaststroke the previous day. Keats, himself a non-swimmer, pleaded with Chapman, a gold medal lifesaver, to rescue the hapless guide.
Chapman slowly shook his head and gazing at the far horizon, stated quite flatly, "He's in denial".
Keats swallowed a date stone.

[With thanks to obee_1]