A British man who was eagerly awaiting FedEx to deliver a new Kindle got quite a surprise. Because of a delivery error, The package that arrived at James Potten's door actually contained a human tumor.

The seal that surrounded the box was labeled, "Specimen return kit -- Patient tumor specimen enclosed."

According to the Huffington Post and the BBC, Potten had a little difficulty getting the shipper to return to his home to collect the 'goods.'

"I've been trying to get FedEx to collect it as it is potentially a sample that needs to be tested and sent back with some urgency."

The package, which was meant for a London Hospital, is now on its way to its rightful owner.