A shocked householder had to call the police after returning home to find an intruder taking a soak in his bathtub.
Staffordshire Police said officers were called to the address in Stoke-on-Trent, but that the "naked man fled the property" as they arrived.
He was arrested shortly afterwards.
The force said the householder, from the Longton area of the city, had also reported that the man "had made himself a drink and was drinking it" while in the tub, in an upstairs bathroom.
A 36-year-old man of no fixed address was arrested on suspicion of burglary following what police called a "highly unusual episode", but was later released without charge.
The force added: "The man's safeguarding needs were addressed."
Chief Inspector Karen Stevenson, commander of the Stoke south local policing team, said: "This was a highly unusual episode and not one we see every day.
"I'd like to reassure local residents that this was a completely isolated incident and there's no reason to be alarmed."