When I see a strange (strident, overly specific, mysteriously worded, etc.) warning label on a package, I wonder what event - if any - precipitated the warning. After that infamous lawsuit in which a McDonalds customer successfully sued after being burned by hot coffee, I think McD's put rather ridiculous warnings on all of its coffee cups, and many times take-out coffee cups are positively emblazoned with warnings. Today, I was putting together a FedEx shipment at work, and noted again the bizarre and worrisome warning on the cardboard envelope, which is big enough to accommodate about ten or twenty sheets of office paper, but (unless you're a moron) obviously can't handle anything more: "Do not ship liquids, blood, or diagnostics in this package."
I'm glad I wasn't the FedEx guy who picked up the package that necessitated that warning.