To engage in an uncontrollable series of of shrill laughs, which are often uncomfortable to the ear. Sometimes abbreviated to "CF."
My boss's friend just called him for a 20 minutes cacklefest. I had to close the door to his office to dull my headache.
by DGC01 July 2, 2009
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A cacklefester is a phrase that’s used to describe someone who enjoys intense and thrilling activities that generate an adrenaline rush. Other terms include sensation seekers, adventurers, or thrill seekers.

They’re the type of people who enjoy things like skydiving, extreme sports, or potentially dangerous lines of work, such as firefighting or emergency rescue.

Some people seek this sensation in the same way that others might chase a high from a particular drug, hence the term Cacklefester.
Tommy: Did you see that accident-prone fool smashing his way up through the tracks.

Robert: It takes a certain type of person to be a Cacklefester and i'm not one of them!
by CannabisKings April 3, 2020
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(n) The laughter of a small group of friends at something really stupid and funny, such as: a Youtube video, video game, movie, TV show, etc.
It was a real cacklefest after Niko Bellic did several backflips after crashing his motorcycle into the subway car.
by Joey Hands June 18, 2010
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