So, suppose you are selling something profane like sweaters. If you are one of the aforementioned advertising droids, you'll come up with something like this, which I saw at a bus stop today (cropped from the full poster):
I can't tell you what the number means, probably printer's code for "if you are reading this you are a nerd". But vraiment is indeed the French word for really. You have to admire the earnest desire of the designer to be properly understood. I need a shower.