Bonkers was a candy

Candy

Candy, specifically sugar candy, is a confection made from a concentrated solution of sugar in water, to which flavorings and colorants are added...

 offering from Nabisco

Nabisco

Nabisco is an American brand of cookies and snacks. Headquartered in East Hanover, New Jersey, the company is a subsidiary of Illinois-based Kraft Foods. Nabisco's plant in Chicago, a production facility at 7300 S...

 in the mid 1980s. It consisted of chewable rectangular shaped candies with a fruity outside and an even fruitier filling. The candy came in a large rectangular package with several of them individually wrapped. Common flavors included grape, orange, strawberry, watermelon and chocolate.

The product is perhaps most memorable for a series of television commercials in which one or more apparently uptight characters would take one bite of a Bonkers candy, and a giant fruit

Fruit

In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...

such as a bunch of grapes would fall from above and knock them into hysterical laughter. The tagline in the commercials was "Bonkers! Bonks you out!" Several of the commercials featured an older Southern woman who said in a deadpan voice that "Some folks think Bonkers is gum" after which the aforementioned giant fruit would fall on someone, inducing raucous laughter. The woman would then deadpan the line: "They know it's candy now."

After the commercials stopped running, the popularity of Bonkers waned until it became a rarity, available only in novelty candy stores. The manufacturer has discontinued the Bonkers line of candies.

New Bonkers

Candy company Joyco currently makes and sells a candy called "Bonkers" apparently with no relation and very little similarity to the original Nabisco variety.