The 55 years old actor wore a meat hairpiece copied after Lady Gaga’s dress meat.
Willis explained to Letterman that the hairpiece “its 100% ground beef sirloin, top shelf, organic.”
Showing a funny part of the outfit, the actor said: “Showering? Not a problem,” Willis joked. “I took a shower a couple hours ago. Lather, rinse, repeat, and tenderize.”
The situation became more bizarre as the actor invited Letterman to take a bite of his meat hairpiece which he did.
The show host chewed for several seconds from the meat and then he walked backstage to spit it.