I was looking for some tire repair stuff and happened to come across this:

Celifornia cancer front

It doesn’t matter whether you know anything about tires or not, it’s the back that’s interesting:

Celifornia cancer back

“This product contains chemicals known […] to cause cancer and birth defects”

But that warning only applies if you’re in California. Or else why did they waste the ink to print “known to the state of California”? :)