Not all eggs are created equal in the eyes of U.S. Customs and Border Protection.
Kinder Eggs, a popular European chocolate egg that contains a toy inside, is banned from importation into the United States because it contains a "non-nutritive object embedded in it."
With the Easter holiday around the corner, the agency issued the reminder this week, warning that the candy is considered unsafe for children under 3. Last year, Customs and Border Protection seized 25,000 of them in 1,700 incidents.
The hollow egg, which is sold by the Italian confectioner Ferrero, is available in Europe, Canada, Australia and parts of Latin America under various names including Kinder Surprise and Kinder Sorpresa. It has taken on a cult status among adults who collect the toys, which vary from rings to animals and cartoon characters.
Kinder Eggs' scarcity in the United States has made them an object of desire: Various websites and online forums are dedicated to acquiring them.
Some are apparently hiding in plain sight. Earlier this week, DNAinfo.com, a New York City neighborhood guide, posted a story and slideshow showing stores where the coveted treats can be found.
"While there are some commercial-sized seizures that occur, most Kinder Eggs are seized in personal baggage or at mail and express consignment facilities," Customs and Border Protection said.
A Canadian woman reportedly learned her lesson the hard way.
The woman was selected for a random search at a border checkpoint in Minnesota when officials discovered she was carrying a Kinder Egg and took it from her, The Toronto Star reported.
A few weeks later, she received a 7-page letter asking if she wanted the egg back or if she was going to abandon rights to it, the Star reported.
"I was in disbelief," she told the newspaper. "It's a $2 egg."