A woman named Lindsay Cadillac had baked her own 16th birthday cake, a heart-shaped dessert with white and pink frosting, and put it in the refrigerator on September 10, 2001. The next evening, she posed with the cake, looking distraught, as a large TV behind her showed smoke coming out of the Twin Towers.

Her father took a photo of the moment, which she later posted on MySpace and Facebook in 2006. The photo gained traction when a friend shared it on Twitter a decade later, and it eventually accumulated millions of views on social media as users created and shared memes with it.

Further details about Lindsay Cadillac's story are available from the source.