When Bono met George W. Bush, he might have been expecting some inane chit-chat about music - but he probably wasn't expecting to be confused for someone else entirely.

A new documentary, 'Countdown to Zero', reveals that the former President of the United States confused the U2 frontman with Sonny Bono, former husband of Cher, when he visited the White House to discuss working together on (RED), the AIDS charity that Bono is heavily involved in.

'Countdown to Zero' - which interviews the world's leading HIV/AIDS activists - sees Bush reminisce on his error,  saying “I guess somebody thought it’d be cool to have Bono in the Oval Office. They must’ve had a Bono record or two. I certainly didn’t suggest it.”

He continued: “Somebody walked in and said ‘Bono’s coming. You do know who he is?’ And then I looked at them and said, ‘Sure, he’s married to Cher.’”

His gaffe is made all the funnier by the fact that Sonny Bono died in 1998, three years before Bush took office.

Of course, this is the same man who once waved at Stevie Wonder, so we really shouldn't be too surprised.

Watch a teaser for 'Countdown to Zero' below: 

Via Uproxx