In January, France’s National Assembly voted to scrap a law that banned bakeries from selling cakes to those under 18.
But some cafes, including Paris’s popular Napoleon Cake Shop, are selling cakes with adult-friendly labels and are being prosecuted.
The bakery’s owner, Jean-Luc De La Vallière, said he was unaware of the law’s ban.
“We are in a different legal position,” De La Valcoure told AFP news agency.
“I don’t know how many cakes are sold by this bakery and we will not sell them to minors.
We sell only cakes for adults.”
French President Francois Hollande, who has vowed to crack down on bakeries, has also vowed to prosecute bakeries that sell cakes with sexual content.
“The bakeries should not be allowed to advertise for sexual purposes.
They must be punished,” he said on Saturday.”
What we are talking about is the most disgusting of all crimes: the sale of cakes that depict sexual acts,” he added.
France has one of the highest rates of child molestation in the world, with more than 200,000 cases reported every year.
In January, police arrested 11 people, including three men, in connection with an alleged paedophile ring at a restaurant near Paris’s iconic Arc de Triomphe.
Investigators say the restaurant was the scene of at least one case of child abuse in 2014.
A year later, the city’s famous Pompidou Square was also a scene of alleged child abuse.