falsetto humoroso
When one falsely considers themselves to be hilarious, the self deception of being funny. A person who is often perceived as a wiseguy, jokester, or smart-ass is characterized as having falsetto humoroso.
A man and his chair: Doug noticed that his 18 year worn-out lazyboy recliner was no longer amongst the formal living room furnishings. He found this note on the table; "I brought your chair downtown to the dump then saw that the Antiques Rode Show was in town and stopped to have it appraised!"
"Ha-Ha ..Doug exclaimed, my wife has a severe cause of falsetto humoroso!"
"Ha-Ha ..Doug exclaimed, my wife has a severe cause of falsetto humoroso!"