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1.
Literally, a human buzzkill, as Paraquat is used to kill Marijuana thus literally killing potential buzz.
The Dude: You thought that Bunny had been kidnapped and you were fucking glad man. You could use it as an excuse to make some money disappear. All you needed was a sap to in it on, and you'd just met me. You...you...human paraquat!
by Buck Turgidson May 07, 2007

Words related to Human Paraquat

buzzkill marijuana paraquat jeffery lebowski the dude
 
2.
An individual who is extremely lame, moreso than a human version of a paraquat. See paraquat.
You are nothing but a human paraquat!
by Wang P. Freely April 04, 2003