cocaine, Cockaigne

Cocaine or cocaine means a drug made from coca leaves, once used as a local anesthetic, now an illegal drug in the United States --
The police charged him with possession of cocaine.
He has a cocaine habit; I don't know how he can afford it.

Cockaigne ( always capitalized, sometimes spelled Cockayne ) means a make-believe land of plenty with no work --
He has no plans for the future; he thinks he's going to live in the land of Cockaigne.
This new job seems like the land of Cockaigne to him.

Now that you know that, you can say --
"Under the influence of cocaine, he writes nonsensical stories about life in Cockaigne."