The man was relieved - in more ways than one...

Proof that it really IS a good idea to keep a cell on you at all times:

Locked loo leaves lollygagger languishing

CHEMAINUS, B.C. - The call of nature turned into something a little more dire for a Vancouver Island visitor when he was inadvertently locked in the loo in Chemainus, B.C. The man was visiting the east coast Vancouver Island community on Thursday and was using the washroom at a local park. He was alone inside the facility when staff slammed and locked the steel door, thinking the room was empty.

Fortunately, the trapped visitor was able to contact family members who called the local RCMP detachment. Officers were quickly on the scene with all the necessary keys to release the unintended prisoner.

Of course, the man was relieved - in more ways than one.

Source: http://cnews.canoe.ca/CNEWS/WeirdNews/2008/07/18/6197326-cp.html