Fletcher Reede is a fast-talking attorney and habitual liar. When his son Max blows out the candles on his fifth birthday he has just one wish - that his dad will stop lying for 24 hours. When Max's wish comes true, Fletcher discovers that his mouth has suddenly become his biggest liability.
This absolutely makes me howl with laughter. It's Carrey at his comic best! It's simple plot allows for the minimum of set-up, so that Carrey can get down to some classic clowning. If you don't, at least, titter at this, you need a check-up from the neck up.