Billy Connolly was left bleeding when he got his penis caught in his zip at 30,000 feet.
He's said to have howled in pain after the incident on board a flight from New Zealand.
He was returning from promoting his new film, The Man Who Sued God, when he realised he had a problem with his zip, says the Daily Record.
He revealed the accident left him in tears. "I was sitting on the flight and I noticed my flies were undone so obviously I didn't want to give anyone a fright. I started doing up the zipper on my trousers but it was one of those big chunky ones and was proving quite difficult.
"Then the unimaginable happened and I got my privates stuck in my zip. It was absolute agony but, however tempted you may be, you just can't ask the air stewardess for help. That would have been too embarrassing. I felt like Mr Bean as it was.
"So I just took a deep breath and gave the zip a big yank downwards. God, it was really sore. I was bleeding everywhere and my eyes were filling up."