Spreading of rumors, infections, truths and lies by telling at least two other people, based on the 1970's <?> advertising scheme.
Jeremy's friend: Amy's got such a fine ass.
Joey: But you've never even SEEN her ass! How do you know?
Jeremy's friend: DUDE!!! The way you two talk about her, how could I possiby NOT KNOW?!! You totally used the Clairol Effect on that story man!!!