When Beavis and Butt-Head are suspected of stealing the missing money from work, they must undergo a lie detector test to prove their innocence.


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Episode cast overview:
Beavis / Butt-Head (voice)


At Burger World, Beavis and Butt-Head's manager notices that some money were missing and he suspects that they did it. They are brought in to do a lie detector test and if they're found lying, they'll be arrested and prosecuted for theft. Butt-Head goes first to do the lie detector test as Beavis has to wait until his turn. During the test, he holds his breath in as they question him about the missing money from Burger World. At first, he denies it and continues to hold his breath in. This is until he passes out for lack of air and he has to be taken out. Beavis is the next to go and is wired up. Then they encouraged him to say something. He said he killed a bunch of people once and the polygraph goes out of control as he sucks his breath. Later on, he's arrested by the authorities who identifies him as the hippie killer, River. At home, Butt-Head watches the news as the reporter asked the authorities how was the killer of 1974 was able to pass off as a teenage boy. They told him that... Written by Anonymous

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Release Date:

15 July 1994 (USA)  »

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Technical Specs



Aspect Ratio:

1.33 : 1
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Did You Know?


In the episode "Liar Liar" the boys are administered a polygraph test by two unseen individuals, Mr. O'Brien and his assistant Julia, a reference to George Orwell's "1984". See more »


Beavis: Ummm I killed a bunch of people once.
[the polygraph acts haywired and Beavis sucks it in. He's later arrested]
See more »


References Ace Ventura: Pet Detective (1994) See more »


Hey Baby
Performed by Maggie Estep
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