OAKLAND -- Southwest Airlines to Green Day frontman Billie Joe Armstrong: You dress like an American idiot.

According to a message sent from the East Bay punk rocker's Twitter account, a Southwest employee ordered Armstrong, 39, removed from an airplane at Oakland International Airport because his drawers were drooping.

"Just got kicked off a southwest flight because my pants sagged too low! What the f- ? No joke!" said the message, posted late Thursday.

Brad Hawkins, a spokesman for the airline, said Friday that he couldn't comment.

"We're still looking into what happened," Hawkins said.

Messages left with Armstrong's manager and record company were not returned.

The saggy pants saga echoed the troubles of Deshon Marman, a University of New Mexico student from San Francisco who was asked to pull up his pajama bottoms as he boarded a US Airways flight at San Francisco International in June.

Marman protested his removal from the plane, a dispute that eventually resulted in his arrest. The San Mateo County district attorney dropped the charges but said Marman, who believed he was singled out because he is African American, could have avoided the confrontation by adhering to the request.

Southwest Airlines was involved in another high-profile fashion call in 2007, when an airline employee in San Diego told a 23-year-old woman wearing a scoop-neck shirt to get off a plane because she was showing too much skin.