Are We Really This Stupid?

After reading the most recent post over at Principled Discovery, I was inspired to go in search of some really asinine warning labels. Luckily, my search did not take long; I came across this site, which has an extensive list.

Some of my favorites:
"For external use only!" -- On a curling iron
"Do not use orally." -- On a toilet bowl cleaning brush
"Please keep out of children." -- On a butcher knife
"Warning: May contain nuts." -- On a package of peanuts
"Warning! This is not underwear! Do not attempt to put in pants." -- On the packaging for a wristwatch

I don't really get that last one....