They drop an egg into a sizzling frying pan and announce, "This is your brain on drugs," or they print mock advertisements that pretend to market cancer.
There are also full-page mock advertisements marketing futuristic products (such as Brain Slugs), which parody the kinds of coupon offers found in other comic books.
This contained campaign ideas, vehicles, "mock" advertisements, and new weapons and accessories, as well as questions and answers.
And they can be mock advertisements, like a Campbell's soup can dress that shows the influence of Andy Warhol.
Marvel distributed postcard-size mock advertisements supporting the act in comic book stores as well as their various titles cover dated "November 1987".
The back cover also featured a mock advertisement for the Synchro-Box, quoted to be "the best device to travel the continuum".
In small print below the mock advertisement appeared the words, "Ad parody - not to be taken seriously."
His next assignment from MAD came four years later, at which point he began regular contributions, including the movie parodies and mock advertisements that magazine is known for.
I received gold jewelry and a Victorian lace peignoir and bestowed on him a literary piece extolling his virtues in a mock advertisement.
The character's first appearance in the comic book was on the cover of Mad 21 (March 1955), as a tiny image as part of a mock advertisement.