no duff
other.— «L/Cpl Steven Jones, 25—an Army passenger on the plane—yelled, “No duff, no duff, we are on fire, we are on fire,” before communication was lost. “No duff” is a military term used to indicate a real emergency instead of a drill.» —“http://www.thesun.co.uk/sol/homepage/news/campaigns/our_boys/article988834.ece” by John Coles Sun (United Kingdom) Apr. 2, 2008. (source: Double-Tongued Dictionary)
Further reading
For rock climbers, skiers, and other outdoor enthusiasts, the word send has taken on a whole new meaning. You might cheer on a fellow snowboarder with Send it, bro! — and being sendy is a really great thing. Plus: a nostalgic trip to Willa...
Loretta in Shreveport, Louisiana, wants to know what lexical and dialectal clues linguists look for when guessing where someone is from. She also wonders: Do people with long careers in the military or who grew up in a military family have a...
We had a similar expression when I was a teenager in Montreal in the early 1970s. “No guff” meant “I’m not kidding you” or “I’m telling you the truth”.