The element of surprise is used because it this looks like a shoe advertisement. However, it is an ice cream advertisement that uses the "change the product" creative tactic. The title "designer" relates to the quality of the ice cream. As the shoe melts right into the ice cream it seemingly represents that they are a cohesive whole similar to them both being designer products.
This advertisement for a farmer's market combines a paradoxical situation with an exaggerated creative tactic. It uses fuzzy warmers that represent winter to prove it's point that their tomatoes are available all winter. The situation is exaggerated through its usage of two completely unrelated objects, tomatoes and warmers. It is simple in its copy and image, but the slight intriguing aspect of the combination brings the reader to reevaluate the advertisement as opposed to flipping by.