How about: Pilots who read the ATIS verbatim.
"10sm visibility"
Pax - "it's 10 miles only/ exactly?"
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( for you domestic folks...)
"temperature 15 degrees celsius.......um.....oh....uhhhm.....oh.....that's 59 degrees fahrenheit"
Pax -"celsius? Isn't that a drug I need to see a doctor about when it lasts for more than 4 hours?"
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"broken clouds at 3,000"
Pax - "I think the pilot just said there's something broken"
How about "mostly cloudy".