liar's loan 

A "no-doc" or "low-doc" mortgage that does not require documentation of income.

Even with his income, couldn't qualify for a large enough loan for the McMansion he wanted, so he got a "liar's loan."

liar's loan by Voltron2 September 30, 2006

liar paradox 

A liar paradox is a statement or statements that cannot have a consistent truth value.

Examples of a liar paradox

This sentence is false.

and

The sentence below is false.
The sentence above is true.

liar paradox by philososphizer December 6, 2007

Liar liar Pence on fire! 

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!"

Liar liar Pence on fire! by NeologianPJG October 7, 2020

Liar Alarm 

Noun

A person who REALLY knows when people lie and tells them to their face.

man 1: I'm not gonna be here on saturday *giggles while looking at man 3 play DooM instead of making eye contact and being honest*

Man 2: (I know he's lying.) YOU LIE!

Man 3: OOH! The Liar Alarm is going off! *punches man 1 for lying*

Liar Alarm by Buzzed Lightbeer February 6, 2006

Liar Liar Pants On Fire 

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.

Liar Liar Pants On Fire by Geek Hillbilly June 6, 2016

Liar Pants 

(adj) Someone or something wearing the pants of a liar at any given lying time.
2. Theresa Collins

Wow, I do not believe your last statement, therefore, you must be a liar pants.

Liar Pants by Simplywest February 7, 2006

liar, liar, pants on fire 

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!"

liar, liar, pants on fire by procadman January 8, 2012