Another batch of those warning signs you can't get enough of, these ones seem to get better as you progress down the page so don't give up too soon ;)

For use by trained personnel only - on a can of air freshener Some assembly required - on a 500-piece jigsaw puzzle box May irritate eyes - on a can of pepper spray used for self-defence Do not attempt to swallow - on a mattress WARNING! This is not underwear! Do not attempt to put in pants - on the packaging for a wristwatch STOP! This is the last rung. - sign on a ladder

Those are just a few of my favourites, there are plenty more on the site...