Lyric discussion by AlexandriaDaniels 

Billy Idol's Sweet Sixteen is actually based on a true story. In 1923, a 26 year old Latvian man named Edward Leedskalnin was jilted by his fiancee Agnes Scuffs (ten years his junior, whom he nicknamed Sweet Sixteen), the day before their wedding. Leedskalnin moved to South Miami, and in a failed attempt to win back the one he loved, he spent the next 25 years carving this structure ... known today as the Coral Castle in Homestead, Florida.

Thanks, I knew there must be a simple meaning to the lyrics of this song.

@AlexandriaDaniels thanks Loved the song and knew about the poor guy that got ditched a day before his wedding (like seriously even back then who does that prob less than 12 hrs before the big day?) but didnt know exactly what "someones building candy castles" actually meant ... apart from him building the coral castle in memory of her .. Id love to of known what her reason for ditching him (and so close to the time too) was and if she ever regretted it .. maybe she thought a man that was nearly 30 was too old for someone...

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