A homeless man in Sebastian, FL was trying to communicate something horrible to people in his local Publix: he'd found a dead body. The message was a little bit lost, though, because he was putting on a puppet show with the deceased's skull

Food & Pharmacy & THEATRE!!
Food & Pharmacy & THEATRE!!
Flickr / dno1967b

According to bystander Nick Pecoraro, the man was talking to the skull and showing it off to customers, then eventually left it on a trash can. He told WPBF what tipped him off to the fact this wasn't performance art:

Sources: WPBF News