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Stag night activities will often live long in the memory, but one actor is unlikely to forget his on-screen antics in a hurry.
Chris O'Dowd, star of television sitcom The IT Crowd, admitted to feeling more than a little embarrassed when acting out stag do scenes in his new film The Boat that Rocked.
Speaking to the Birmingham Post, the 29-year-old recalled receiving more than a few funny looks as he stood in his underpants on the steps of London's National Gallery.
Despite shooting the scene at 06:00 GMT, Mr O'Dowd said Trafalgar Square was "busier than you might think", with plenty of tourists stopping to capture the scene on camera.
"We did it a good few times and it may have gone as far as standing in the fountains," he admitted.
"I don't think I'll ever live it down. And I notice it's in the trailer."
The Boat That Rocked, which features a host of big-screen names including Philip Seymour Hoffman, Emma Thompson and Rhys Ifans, launched in cinemas across the UK earlier this week.