Here’s a 1930s example of what became known as “shockvertising“. It still works as an attention-grabbing technique – it made me gasp when I found it.

It’s a rather strong method of advertising from Brown of Myreslawgreen, an economical clothes shop. You need to read the small print to see what it’s really saying, and I expect everyone did read it – I can’t imagine many people blithely turning the page without investigating further.
“Every husband worthy of the name likes to see his wife and children well-dressed. It is a difficult problem these hard times, and our advice is – don’t KILL YOUR WIFE with worry trying to make ends meet….”