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A one-liner is a joke that is delivered in a single line. A good one-liner is said to be pithy – concise and meaningful. Comedians and actors use this comedic method as part of their performance, and many fictional characters are also known to deliver one-liners, including James Bond, who often makes pithy and laconic quips after disposing of a villain.
Examples
"Never read a pop-up book about giraffes." (Sean Lock)
"Throwing acid is wrong. In some people's eyes." (Jimmy Carr)
"My girlfriend makes me want to be a better person - so I can get a better girlfriend." (Anthony Jeselnik)
"Cricket. No matter who wins, both teams, and all the fans, are losers." (Frankie Boyle)
"An escalator cannot break, it can only become stairs." (Mitch Hedberg)
"My movies were the kind they show in prisons and airplanes, because nobody can leave." (Burt Reynolds)
"I'm on a whiskey diet… I've lost three days already." (Tommy Cooper)
"I have nothing to declare except my genius." (Oscar Wilde, upon arriving at US customs, 1882)