Sleeping disorder. Symptoms include drowsiness, instability to stay alert, and sudden sleep. Symptoms manifest themselves only when driving/riding in a automobile.
She cannot drive at night because her carcolepsy will cause her to have an accident.
by The fried piper November 18, 2009
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A nonthreatening condition found most frequently in children of all ages and a small percentage of the senior citizen population.

Victims of Carcolepsy typically show symptoms such as falling asleep as soon as a car begins to move, waking up hungry and complaining of a sore neck for hours.
Dad: "Gee whiz! Is he asleep already?"
Mom: "Oh, yeah. He's got that Carcolepsy.

I tend to be Carcoleptic, so I bring a pillow with me on road trips.
by Kryzta February 3, 2010
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A person who immediately falls asleep while in a vehicle that begins to move.
"There goes Joe and his Carcolepsy again. He'll be asleep for the whole trip."
by WeGotDemMaffs July 25, 2017
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A disorder characterized by sudden and uncontrollable, though often brief, attacks of deep sleep, when driving in a car.
Mom picks up daughter from school and begins to drive.
Mom- "How was your day?"
Daughter- "Good, I have homewo...."
Mom- "You have what?"
Daughter- Sound asleep, mouth open.
Daughter has just had an attack of Carcolepsy.
by Jenny Jimenez August 11, 2011
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Sudden, excessive sleepiness incurred in a car.
Because I have carcolepsy, I fall asleep everytime I drive.
by AmyShu March 7, 2017
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The tendency of falling asleep right as the car starts moving. For example your have to take your friends kid to there sports practice and you get in the car and you almost pull a Wilbur (Wilbur Soot) aka almost fucking dying. When this happens the car starts moving you crash Into another car and when you do this you realize ah shit this is gonna be bad so your friend cusses you out and your sitting there like "fuck off Mary ur boyfriend was a hoe anyways then their like ugh wow well ur dads the one that's been sleeping with me. After this happens you've ruined a friendship and you hate your dad. :)
by Email me at... loser u thought December 11, 2021
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The act of getting sleepy while riding in a car. The word is a portmanteau word from car (for a motor vehicle, but it can occur on a plane or a train as well) and narcolepsy (a sleep disorder). The difference between carcolepsy and narcolepsy is that people who suffer from carcolepsy occurs in people who do not have a sleep disorder. It is theorized that people with carcolepsy are sensitive to gentle vibrations, the sound of the car engine or the tires interacting with the road, and a rocking motion. These stimuli have a soothing effect on some individuals. This sometimes interferes with the person being able to drive although they have no manifestations of narcolepsy. The best example of carcolepsy, although the term is not often used in this situation is taking a fussy baby for a car ride to make them sleepy. Sleep medicine physicians sometimes jokingly use carcolepsy when someone brings this issue to their attention.
I was really looking forward to a chat with Aunt Helen on the drive to Grandma's house but she had an "attack" of carcolepsy as soon as she got into the car and slept the whole way there
by Jerold in Citrus Park October 18, 2023
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