The theatrical notion of disguise is associated with disaster in his stories. He had a whimsy about flying to the moon. Whimsy can be humorous to someone with time to enjoy it.
source: WordNet 3.0
the trait of acting unpredictably and more from whim or caprice than from reason or judgment
I despair at the flightiness and whimsicality of my memory.
source: WordNet 3.0
A whim; a freak; a capricious notion, a fanciful or odd conceit.
source: Webster 1913
verb
To fill with whimseys, or whims; to make fantastic; to craze.
