A number of years ago, what product was advertised by means of the slogan, "I can't believe I ate the whole thing" ?

That memorable line, full of regret and overindulgence, was famously used to advertise Alka-Seltzer. The popular slogan first appeared in a television commercial in 1972. The ad featured a man named Ralph moaning to his wife in bed after a large meal, "I can't believe I ate the whole thing." His wife's unsympathetic and humorous responses created a relatable and memorable scenario for viewers who had also experienced the discomfort of overeating.

The commercial was an immediate success, and the catchphrase quickly entered the American lexicon. It was created by the advertising agency Wells, Rich, Greene, with the concept originating from copywriter Howie Cohen's personal experience. The ad's effectiveness lay in its simple, humorous, and universal appeal, connecting the feeling of post-meal misery with the relief offered by the product. The campaign was so impactful that it earned a Clio Award, a prestigious honor in the advertising industry.

The slogan's enduring popularity is a testament to its cleverness and cultural resonance. It perfectly captured a common human experience and linked it to the Alka-Seltzer brand. The ad was so iconic that it was remade in the mid-2000s, introducing the classic line to a new generation. The phrase remains a widely recognized piece of advertising history, often quoted in movies and television shows, showcasing its lasting impact on popular culture.