Bizarre actions being done in the backseat of a car, the actions can range anywhere from straight up BOSSHARD (these actions are just barely Backseat Jabberwockies so they could instead be called ultra-instinct bruh moments), to đŸ…±osshard moments.
Friend 1: Bro this headass I know was doing some Backseat Jabberwockies the other day and literally ended up with his head up his ass

Friend 2: Bruh wtf how

Friend 1: Backseat Jabberwockies bro
by Bruhfelia September 27, 2019
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(noun) The use of nonsense words or misuse of actual words to create or exaggerate threats for political gain.
Did you hear Sarah Palin talking about death panels on CNN today? Seriously, what is her deal?

She suffers from Republican Jabberwocky Syndrome, don't be so insensitive.
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It’s that walk you do when you need to hold in a poop. It’s not a normal walk, it involves jabbing your feet in a manner that looks like a penguin waddle mixed with an Ewok that is dancing to Cher.
I’ve been holding this poop in for hours to make it through this meet, time for me to jabberwocky to the bathroom.
by Yuengling drinker May 8, 2019
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Specifically when a homosexual person threats to harm an educational facility, e.g. a high-school. This word is not a defined as slur, however it unfortunately can be used to describe homosexual people in a negative manner. This word could also be used in a variety of languages, such as Spanish or Portuguese.
"What type of criminal is he?" "He is a jabberwocky, he was arrested for threatening to kill his classmates."

"Do you believe that he may quite possibly be a jabberwocky?" "Are you asking me if I believe that he is a homosexual?"
by The Annie Leonhart June 28, 2022
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