How soon is too soon?
Not soon enough. Laboratory tests over the years have proven that babies who start drinking soda during that early formative period have a much higher chance of gaining acceptance and "fitting in" during those awkward pre-teen and teen years. So, do yourself a favor. Do your child a favor. Start them on a strict regimen of sodas and other sugary carbonated beverages right now, for a lifetime of guaranteed happiness.
They invoke science, referring to laboratory tests, concluding that babies who start drinking soda at an early age will "fit in" better in later years. How can you test behaviour over a span of ten to twelve years in a lab? Did they keep a bunch of children captive, one group drinking soda and a control group having none? Then, after a number of years, concluded that the soda drinkers were more sociable?
It's a dishonest ad. Fortunately, attitudes have changed and this ad wouldn't be tolerated today, in view of the alarming rise in childhood obesity!
UPDATE
I'm relieved to find out that this ad is a fake! Thank you, Amy/Ottoline, for providing the following link:
The Museum of Hoaxes