Why it worked
The video uses anthropomorphism and a humorous, unexpected reaction to a common product to create a memorable and shareable piece of content. The absurdity of a corn cob loving butter spray is inherently engaging.
Summary
An animated ear of corn is sprayed with SmartyPants Butter Flavored Spray, causing it to animate and express affection for the product. The corn character then sprays itself, leading to a humorous reaction.