George Clooney used to revel in using Arnold Schwarzenegger's name as an alias to check into hotels - because he would chuckle whenever he was addressed as the action man.
The Hollywood hunk admits his Batman & Robin co-star's name was a favourite mock moniker early on in his career and he would get a kick out of using it every time.
He says, "The funny thing is, when you stay in a hotel, no matter what alias you use, all of the people at the hotel have to use that name. So I would always go as Arnold Schwarzenegger. And then they (hotel staff) would go, 'Right away Mr. Schwarzenegger!' And it made me laugh. (But) I've had to change that!"