The "You're Not You When You're Hungry" campaign is a highly successful and long-running advertising campaign by Snickers, a popular chocolate bar brand owned by Mars, Inc. This campaign, which was launched in 2010, uses humor and a simple premise to convey the idea that hunger can change a person's personality. Here's an explanation of the campaign:

1. Concept: The central concept of the campaign is that when people are hungry, they become irritable, moody, and exhibit unusual behaviors. Snickers suggests that consuming their chocolate bar can quickly satisfy hunger and return individuals to their normal selves.

2. TV Commercials: The campaign primarily consists of a series of humorous television commercials. Each commercial features a situation where someone is acting out of character due to hunger. They did be portrayed as cranky, impatient, or even irrational. As a solution, they are offered a Snickers bar, and upon taking a bite, they immediately transform back into their normal, composed selves.

3. Famous Tagline: The campaign's tagline, "You're Not You When You're Hungry," has become iconic and is often associated with Snickers. It succinctly captures the campaign's message that satisfying your hunger with a Snickers bar can restore your normal behavior.

4. Celebrity Appearances: The campaign has featured celebrities and well-known figures, including actors, athletes, and comedians, in its commercials. These celebrities have contributed to the campaign's appeal and memorability.

5. Success and Impact: The "You're Not You When You're Hungry" campaign has been highly successful for Snickers. It has received widespread recognition, and the commercials have been well-received by audiences. The campaign has effectively reinforced Snickers' positioning as a satisfying and quick hunger fix.

6. Variations and Adaptations: Over the years, the campaign has been adapted for different markets and situations. Snickers has created various versions of the commercials to align with cultural nuances and trends.

In summary, the "You're Not You When You're Hungry" campaign by Snickers is a humorous and effective marketing initiative that uses relatable scenarios to convey a simple message: Snickers satisfies hunger and restores a person's normal disposition. The campaign's humor and memorable tagline have made it a standout and enduring success in the world of advertising.