I remember many moons ago people complaining about the fairly standard announcement "We apologise for the delay to your flight to XXX, this is due to the late arrival of the inbound aircraft", but didn't tell you why the inbound flight was delayed. One of the handling agents agreed with the statement being a bit vague and announced "We apologise for the delay to your flight to Palma, this is due to forest fires in Greece". No other explanation was given (ie the inbound aircraft was operating a Corfu return) leading to a lot of pax looking very confused as they knew (or thought) they weren't going anywhere near Greece.