Ancient Britons used to eat human flesh and drink out of human skulls, according to scientists from the Natural History Museum!
They've been looking at 14,700-year-old bones which were dug up in Somerset.
The skulls have been sculpted in such a way that they could have been used for carrying drinks.
The bones show signs that the meat was eaten. It's not known if the victims were killed for food or died naturally before being served up.
The bones were discovered at Gough's Cave in the Cheddar Gorge, a deep canyon in the south-west of England.