Last week.....inUSA, the home off most muppets!
JFK Controller: (to my confirmation by using the ICAO expression "affirm") "xxx was that an affirmative?"
Me: "Affirm"
Controller: "err, So is that a yes or a no?"
Me: "Well actually it's an affirm. But call it a yes if you wish."
Controller: "xxxx, are you not able to speak plain English? Give me a yes or a no, that would help us all out."
Me: "Ok, yes, affirm"
Controller: "Call Boston on xxx.xx"