Nick,
Great story about the McDonalds milkshake - is there any film of the "experiment?"
There is a theory that if everyone in a McDonalds sucked on their milkshakes at once the windows would implode. I think it has to be worth bunging a few Rotorheads into a heli and trying this out, for purposes of scientific research.
I'm feeling a tad left out as the only thing I've ever eaten was a piece of chewing gum and even that took some of my hovering ability away. I do, however, know a female pilot who ate something in flight, but that's likely to get the whole thread moved very quickly...