Much like the fucked up things in the movie "The Hills Have Eyes". But the person is just fucking insane without any nuclear remains around to mess them up. They are just retarded and crazy from the get go.

Really...a psychobilly can be anyone just crazily pissed off or just any freak ass person you see. Someone thats actions or looks can be related to in anyway to the things in "The Hills Have Eyes".
"Man did you see that fucking psychobilly bitch scramblin down the street!?"

or

"Man my goddamn step-mom is a psychobilly...she just came in the house screaming like a fucking retard without its pills."
by THE CALAMITY MAN May 11, 2007
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yea all that rockabilly + punk stuff. and then if you play you're tunes correctly it becomes fuckabilly
Whoa I used to like Tiger Army cuz I thought they were an awesome psychobilly band. Little did I know that they're really a hardcore fuckabilly band
by lucifer December 7, 2004
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1. A song by The Reverend Horton Heat.

2. A "freakout" or crazy song of the psychobilly genre.

3. A deranged hillbilly on a drug trip.
1. "It's a..a.. PSYCHOBILLY FREAKOUT!!"

2. "Psychobilly freakout is an insane song, man.."

3. "They had to put *insert name here* in the mental institution the other day. He had a Psychobilly Freakout!!"
by Chris9283 August 26, 2007
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The unbreakable oath taken by members of psychobilly subculture. Once the oath has been taken one may not cease being a psychobilly. This is possibly why there are many older members of the genre.
by gompz October 21, 2010
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1. A song by The Reverend Horton Heat.

2. A "freakout" or crazy song of the psychobilly genre.

3. A deranged hillbilly on a drug trip.
"It's.... it's.. IT'S A PSYCHOBILLY FREAKOUT!!" -Reverend Horton Heat

"Psychobilly freakout is an insane song, nigga.."

"They had to put Rufus in the mental institution the other day. He had a...a... Psychobilly Freakout!!"
Get the psychobilly freakout mug.