Immigration officers had a "Kinder Surprise" when they discovered a woman smuggling drugs using a plastic container from one of the children's treats.
The traveller arrived at Birmingham International Airport with 30g of cannabis hidden in a container from the chocolate egg - normally used to hold a plastic toy.
The container had been concealed in an intimate body cavity, a spokesman for the UK Border Service said.
It was discovered using body-scanning technology after the passenger arrived on a flight from Lisbon, Portugal.
The woman, from the Coventry area, was arrested and later released with a formal warning, the spokesman added