Men in Black (MIB), in American popular culture and in UFO conspiracy theories, are men dressed in black suits who claim to be government agents who harass or threaten UFO witnesses to keep them quiet about what they have seen. It is sometimes implied that they may be aliens themselves. The term is also frequently used to describe mysterious men working for unknown organizations, as well as to various branches of government allegedly designed to protect secrets or perform other strange activities. The term is generic, used for any unusual, threatening or strangely behaved individual whose appearance on the scene can be linked in some fashion with a UFO sighting.

According to the accounts of those reporting encountering them, Men in Black always seem to have detailed information on the persons they contact, as if the individual had been under surveillance for a long period of time. They have been described as seeming confused by the nature of everyday items such as pens, eating utensils or food, as well as using outdated slang, though accounts on the behavior of Men in Black vary widely. Accounts indicate that they often claim to be from an agency collecting information on the unexplained phenomenon their subject has encountered. In other accounts, they seem to be trying to suppress information by, for instance, trying to convince their subject the phenomenon never existed. They have been described as behaving in either an exceedingly furtive manner or a completely outgoing one, with wide grins and disconcerting giggles. This behavior suggests that the "gigglers" were pranksters, or perhaps people just having a joke around. Conspiracies about groups of people, like MiB here, are often preyed upon to use as pranks, just like sometimes people impersonate others for either scandal or enjoyment.

Willard Christopher "Will" Smith, Jr. (born September 25, 1968), also known by his stage name The Fresh Prince, is an American actor, producer, and rapper. He has enjoyed success in television, film and music. In April 2007, Newsweek called him the most powerful actor in Hollywood. Smith has been nominated for four Golden Globe Awards, two Academy Awards, and has won multiple Grammy Awards.

In the late 1980s, Smith achieved modest fame as a rapper under the name The Fresh Prince. In 1990, his popularity increased dramatically when he starred in the popular television series The Fresh Prince of Bel-Air. The show ran for nearly six years (1990–1996) on NBC and has been syndicated consistently on various networks since then. In the mid-1990s, Smith moved from television to film, and ultimately starred in numerous blockbuster films. He is the only actor to have eight consecutive films gross over $100 million in the domestic box office and the only one to have eight consecutive films in which he starred open at #1 spot in the domestic box office tally.