"Stop this nepheloccoccygia!" Terrence said, interrupting my reverie on the chaise lounge. "It's your turn to clean the benthos of this filthy swimmming pool."
"That's just stultiloquence!" I retorted. "It's just a swimming pool, not Lake Erie. And you cleaned it just last week. Your ostrobogulous obsession with the insignificant flotsam on the bottom is just pure ishkabibble!"
Read all about them:
nephelococcygia = cloud gazing (TWITO, page 95)
benthos = the bottom of an ocean, lake, or sea (page 20)
stultiloquence = foolish talk or babble (page 141)
ostrobogulous = weird or bizarre (page 105)
ishkabibble = nonsense (page 74)

Photo by me!