Top Definition
A knife that is always red because its hot as hell from the power of actual magma. When a regular knife would cut or stab a person, this makes you fucking explode.
"Dude, my magma knife got confinscated yesterday because of all the people I made explode, so I bought this gay regular knife."
by Joe Klein November 21, 2006

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Soft and offensive. Just like you.

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