Robbie Williams is one of the most successful British pop-stars...ever.
But Pink put her foot right in it once by confusing him with a local chef and asking him for cooking tips...as you do.
The duo told the hilarious story when they both filmed appearances on The Graham Norton Show, with Robbie explaining, "We have a mutual friend in LA and they contacted me on email saying that Pink wanted to speak with me.
"I was very excited to know what she wanted... but there were several emails and I wasn't making head nor tail of them.
"It was only after a while that she finally said: 'Wait, are you Robbie the chef?'. I was shocked, but said no - I'm Robbie: the Williams."
Pink, whose real name is Alecia Moore, laughed along and added, "I was asking him about salmon!"
Despite their awkward encounter, the former Take That singer wasn't a diva about it and they put the mishap behind them to become mates.
The story comes soon after the British singer was forced to pull out of his world tour due to illness, leaving his fans in a panic.
He took to YouTube in October to explain what happened to them, saying, "How am I is really good. I've been recovering from an illness now for the last five weeks.
"Unfortunately, that illness kicked in just at the end of my tour, a tour which was going so well."
"The audiences were incredible, I was okay, the band was amazing and I was a soldier and I needed to finish that tour, I needed to go to Moscow and I needed to go to St. Petersburg and then I got some test results and they were very worrying and I ended up in ICU (Intensive Care Unit), so I couldn't go," he continued.
"I haven't pulled out of a tour for bad health since 1998 so you know if I can't do it then there's something going on that I just can't do it."
We're glad to see you're back to your hilarious self, Robs!