Two Cunts in a Kitchen

From Wikipedia:

Two Cunts in a Kitchen, or sometimes, less graphically Two Cs in a K, is slang used within the advertising industry for a type of television commercial. Generally, the commercial shows two women in a domestic scene, discussing, using, or otherwise portraying the advertiser’s product in a positive manner. An example of such a style of advertisement is a typical brand-comparison advertisement for a detergent or a household cleaning product.

Here’s the best explanation for the phrase:

This charming phrase first gained usage in the early 1980s and is still widely used today in the advertising industry. It is a useful phrase to be aware of, in that it serves as a reminder of the level of contempt in which that industry holds its intended targets.