popularity of the MAD Magazine "fold-in"
led a lot of people worldwide to use it for their own advertisements.
This one, as we can see, is for Bakeman's Glucose Plus biscuits.
The rules are the same - fold page over so that A
touches B. I know you'd never forgive me if I didn't,
so let's see what the hidden message is...
what do you know? Those two weird shapes that looked suspiciously
like half-a-biscuit each combine to become a whole biscuit.
We did not see that coming.