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Home viewers mailed their jokes to the program, during which they were read by a panel of four celebrities – two of them Laugh-In regulars. Each joke was rated on a scale of zero to 100.
The highest-rated joke that day won the home viewer a prize (such as a trip to Hawaii), while the lowest-rated joke won a trip to "beautiful downtown Burbank".
One particularly notable joke from the program asked the question, "What's the difference between a sigh, a car, and a jackass?" When the other person answered that he did not know, the questioner said, "A sigh is 'oh dear,' and a car is 'too dear.'" When pressed what's a jackass, the questioner responded, "You dear."
Read more about this topic: Letters To Laugh-In