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
If you work in tech support, you might use snarky slang for problems caused by computer users themselves. There’s the acronym PEBCAK, for example, which stands for Problem Exists Between Chair and Keyboard. And: a lush poem about the sea inspired by...
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
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”.