The amount of warnings not to take while pregnant on this pack of thalidomide. (It's still useful for treating certain cancers)
(discuss.tchncs.de)
Reminds me.. back in the 90s I had two Miatas, one imported from Canada and one from the US. In the operating manuals, one difference that stood out in the US manual was the inclusion of a warning to not stand while driving.
Those poor Canadian Miata owners didn't stand a chance, did they.