"He seriously believes they're Wonder Woman planes. He's said this like 10 times."

[Tanuki]

10. Dementia symptom

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5426314/

..."Verbal repetition in people with dementia is one important manifestation of reduced cognition. It can occur early in dementia and is amongst the behaviors that most trouble caregivers (Hwang et al., 2000; Ready et al., 2003; Rockwood et al., 2014). Repetitive verbalizations can take the form of repetitive questions, story-telling, statements, and talk on a topic and repeating words (Cook et al., 2009). Like other symptoms in dementia, verbal repetition behaviors can fluctuate and have been reported as a marker of a “bad day,” as described by caregivers (Rockwood et al., 2014). Even so, little is known of how verbal repetition manifests in the daily lives of people with dementia."...(more)