A name given to somebody partaking in the act of lying.

A consequence of becoming a, "liar, liar," is finding your pants spontaneously combusting into flames.
Lando: "Yo, I'm not a Judas."

Pete: "Liar Liar, Pants on fire."

Lando: "Ah, good point my good sir, could you please extinguish my trousers?"

Pete: "No...you bloody traitor."
by Ian "The Main Man" Mckenna April 14, 2005
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Liar Liar Pants On Fire is a phrase that children like to scream at each other whenever they think the other is lying. They also like to scream it at adults who tell them stories about fairies. It is an overall stupid thing to say, since if your pants actually caught on fire when you lied, more politicians would be dead.
Kid: Liar Liar Pants On Fire!
Adult: Shut the fuck up.
Kid: *cries*
by Adam Cecil May 29, 2006
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A thing Patrick Star said instead of "Liar Liar, Pants on Fire" in an episode of Spongebob Squarepants when Patrick ate a candy bar then thought he'd lost it, then blamed it on Spongebob and said the line.
Patrick: Liar Liar, Plants for Hire
Spongebob: It's pants on fire Patrick
Patrick: Well you would know, liar
by UrbanlyDictionistic October 28, 2021
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"Liar Liar Pants On Fire" is a playground taunt that is used to indicate each other whenever they think the other is lying.

It refers to the fact "fibbing" is consider naughty, and pants/bottom 'on fire' is an euphemism for spanking.
Child1: Well my dad can pick up a truck!
Child1: Liar Liar Pants On Fire!
by Roguebfl April 14, 2009
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The appropriate exclamation when Vice President Mike Pence tells fibs on national television during a debate.
When Vice President Mike Pence lies, saying the Trump administration has reduced CO2 emissions during their tenure, the whole country gasped and exclaimed, "Liar liar Pence on fire!"
by NeologianPJG October 8, 2020
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A Chant normally used by children to indicate they think someone is lying.
The full phrase is "Liar, liar, pants on fire. Hangin' on a telephone wire".
It is a paraphrase form an 1810 poem by William Blake titled "The Liar".
Tom: "I didn't brake that lamp. My brother Dick broke it."

Dick: "Liar, Liar, pants on fire!"
by procadman January 8, 2012
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In my experience when I was growing up," Liar Liar Pants On Fire" refereed to the ass whipping you would get if your parents caught you lying.You felt like your pants were on fire afterwards
Mom yelled"Liar Liar pants on Fire" when I was caught lying about skipping school.
by Geek Hillbilly June 6, 2016
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