When someone says something extremely disturbing that it leaves you feeling uncomfortable for the rest of the day.
Guy 1: we should put a pig mask on and go pork that girl.

Guy 2: that's gacy bro.
by RalphJahid November 9, 2015
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someone who loves to get fucked in the hairy ass by an old man
I am a gaci and a versatille man.
by noname1743 May 16, 2022
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To kill something (a joke or such) greatly, and kill it so bad that no one ever sees or uses it again (as in a reference to the fact that John Wayne Gacy Jr. killed 33 people and buried them in his crawlspace).
Guy 1: What's up?
Guy 2: (pathetically) Wazzup!?
Guy 1: Dude, why did you have to Gacy it?
Guy 2: (hangs head in shame)
by Pogo the Clown July 18, 2009
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Polish for "underwear" that has been turned into slang in North American English, also spelled or pronounced as Gachy or Gotchy
A "gacie" pull. When someone grabs your underwear from behind and yanks it upward in a swift motion.
by TAPBN November 24, 2010
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mad cool. like more than awsome.
"yo man. that shit was gacy."
by Samantha June 18, 2006
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Commonly referred to as Pogo (John Wayne Gacy's clown name), Madonna Wayne Gacy was the longtime keyboardist (1989 - 2007) for Marilyn Manson, replacing original keyboardist Zsa Zsa Speck. Real name being Stephen Gregory Bier Jr., he was born on March 6th, 1964 in Fort Lauderdale, Florida. His stage name was formed by combining the names of Madonna and John Wayne Gacy. He has played on every Marilyn Manson album to date, with the exception of the most recent release, Eat Me, Drink Me. Shortly before the release of Eat Me, Drink Me, he left the band and returned home due to a major family crisis. He was replaced by Chris Vrenna, who had previously played live drums with Marilyn Manson after their drummer, Ginger Fish, was injured when he fell from the back of his drum riser and then off of the very high stage in 2004.
Madonna Wayne Gacy - one man, many hairstyles. While he was still in Marilyn Manson, used to have a section of the stage called "Pogo's Playhouse", which he would decorate with various items.
by Hoodsie Woods February 16, 2009
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A Pschycopath.

Who deserved to be shot in the head.
" John Wayne Gacy died by lethal injection, after his head was bashed wide open by a dozen police officers who he tried to entertain as a clown. "
by Bill Abnovsky August 23, 2006
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