dub-dub
n.— «After the classroom training, you followed a “top ten” waiter/waitress (w/w—pronounced dub-dub) around for a week before you could even wait a table yourself.» —“Re: Monterey Bay, general ranting.” by Jeremiah McAuliffe in Pittsburgh Usenet: pgh.food Apr. 22, 2000. (source: Double-Tongued Dictionary)
Further reading
The word filibuster has a long and colorful history, going back to the days when pirates roamed the high seas. Today it refers to hijacking a piece of legislation. Plus, the language of yoga teachers: When doing a guided meditation, you may hear...