Package Deal: Mayonnaise + Toilet Paper

In his famous book THE HIDDEN PERSUADERS, Vance Packard wrote about people's non-rational decision making (and how American business was endeavoring to overcome, or at least manipulate it).
An example he gave was when a soup company offered purchasers a free pair of women's stockings with each box. There was a slip in the box to redeem for them, but it was not successful. Psychological depth testing found that people were subconsciously imagining having feet in their soup.

Doesn't this sound strikingly similar to the 30 Rock explanation of vertical integration involving corn chips and anti-diarrhea medicine?

A grocer in central NY had an ad campaign that featured paired products. For example, corn on the cob and toothpicks. Once it was prune juice and toilet paper. Never saw another ad like that again.

How appropriate that Mexico has labels in English since everything here has labels with Spanish.

Cause and effect, John. Cause and effect.