Don't you just hate it when you get your knob stuck in your zip while meeting a royal and then 17 years later everybody finds out because your sister goes on about it in her memoir? Annoying innit?
Alfie Allen is the latest person to be stricken by this age old gripe.
Lily Allen says her brother Alfie got his penis caught in his zip before meeting Princess Diana. Credit: PA
Alfie - who was just five at the time - got his pecker stuck in his zip just moments before meeting Princess Diana and started crying, which to be fair is still the natural response of grown men who makes this most painful error.
The Princess of Wales, compassionate as she was, asked Alfie what was wrong, and he replied 'I've got my willy caught in my zip'.
This is all according to the actor's sister, singer-songwriter Lily Allen, who spilled the beans in her memoir, My Thoughts Exactly.
Recounting the uncomfortable encounter, Lily, 33, said she and her brother were due to present Diana with gifts at the London premiere when the zip up slip up happened. Lily was to give Diana with flowers while Alfie, ironically, was on handkerchiefs - though it's not clear whether Diana let him keep them to wipe down his teary cheeks.
It's not clear whether Princess Diana let Alfie wipe down his cheeks with the handkerchiefs he was supposed to give her. Credit: PA
In the memoir, Lily said: "Diana the Princess of Wales came to the premiere. I was a flower girl and gave her a posy, Alfie had a box of handkerchiefs to give her but somehow he got his knob caught in his trouser zip moments before meeting her.
"He was crying when she approached him. 'Are you ok?' she asked him. ''No,' he replied 'I've got my willy caught in my zip.'"
My Thoughts Exactly has made headlines for much bigger bombshells than this though, which isn't too surprising really - if you're going to write a memoir when you're 33 then you best have some bloody good stories to tell.
Lily Allen candidly discusses her sex life in her memoir. Credit: PA
The book goes into a lot of detail about Lily's sex life, with the BRIT Award winner claiming to have had sex with one of her dad's 'TV star' friends when she was 14 and he was 19. She also said she employed female escorts to help overcome marital problems and did not enjoy sex until her thirties.
Featured Image Credit: PA