Hollywood star Bruce Willis has invented a bizarre helmet to help avoid head injuries on the sets of his action films.
The 54-year-old gave American TV audiences a laugh when he banged and bounced his head on the desk of talk show host David Letterman May 6 night to prove how well the device works, reports femalefirst.co.uk.
"I'm feeling a little clumsy lately. A little clumsy around the house and clumsy on the sets. You know, you get a little kicked in the head sometimes, banged around. I'm getting a little older so I was fooling around the house and I get one of those little rubber band balls. This protects my head. I like to call it Bruce Willis' concussion buster," he said.
Laughs also turned to gasps when Willis challenged the host to smash an empty bottle of whiskey against his bald head after he took off the gear, sending glass shattering all over the set.
Willis shook off the stunt, joking: "It's the seatbelt of the 21st century".