Rhys Ifans put his soiled underwear in a Royal Mail post bag as a prank. The "Notting Hill" actor - whose behavior has become increasingly erratic since his split from Sienna Miller earlier this year - decided to play the drunken prank at the headquarters of Britain's Q Radio after he had been interviewed for the station.

After seeing a postman arrive, Rhys is said to have taken a pair of dirty men's undergarments out of his pocket and hide them in the mailman's sack.

A source said: "Rhys and some friends were down in the reception being quite boisterous. They had obviously been sinking quite a few drinks."

"He was particularly excited when the postman arrived. He went outside and was singing 'Hey Mr Postman' and 'Special Delivery' and giggling to himself manically."

"After handing out his letters, when the postman arrived back he looked inside his sack and pulled out a piece of underwear. He looked as if he was going to be sick when he saw them."

The furious postman reportedly stormed to the company's reception area waving the offending item at arm's length.

A spokesman for Bauer Media, which owns Q Radio, said: "We did have an unofficial compliant from Royal Mail about a rogue item in our post. But no further action has been taken."

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