A picture is worth a thousand words, so I set him up again today with a third worker - and he obliged.
My son came home from preschool two decades ago exhibiting the same behavior. Verbal correction wasn't effective, so I mooned him back and nipped things in the bud (so to speak).
Chiquito doesn't moon me, and maybe it's just normal immature male behavior?
I also find myself reluctant to moon a monkey...