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
It was a dark and stormy night. So begins the long and increasingly convoluted prose of Edwards Bulwer-Lytton’s best-known novel. Today the annual Bulwer-Lytton Contest asks contestants for fanciful first sentences that are similarly...
When there’s no evening meal planned at home, what do you call that scramble to cobble together your own dinner? Some people apply acronyms like YOYO — “you’re on your own” — or CORN, for “Clean Out your Refrigerator...
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”.