McConaughey: Method Actor?

5/22/2007 1:28 PM PDT BY TMZ STAFF
Matthew McConaughey was performing some kind of island ritual while shooting his upcoming movie, "Surfer Dude." Or was he?

McConaughey was spotted at Malibu beach yesterday ... covered in mud, prancing around while carrying a couple of giant palm leaves and strutting like a chicken.

Or as Matt likes to call it "Monday morning."