magma knife 

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."

magma knife by Joe Klein November 22, 2006

Magma Cream 

The act of ejaculating into a girls vagina then proceeding to fuck her more until she cums and squirts both juices onto the guys stomach

Jekx and Codi were having sex last night and Codi leaned in and told Jekx "Magma cream me bitch".

Magma Cream by MattXMaida August 6, 2015

Magma bong rip 

A magma bong rip is when your friend or yourself light the contents of your bong to the point it looks like molten magma. Resulting in an extremely powerful hit and you potentially coughing out hot blood.

"Yo, Sami lit that bong so hot last night I thought my lungs were on fire dude!"

"Yeah man Sami really loves those magma bong rips haha"

Magma bong rip by Shreddedbikeboi June 18, 2017

Magma Cavern 

One's fiery asshole.

"My magma cavern is on fire, Jimothy"
"I didn't ask you, Jheronica"

Magma Cavern by Stan Key Bousi April 13, 2020

Magma-cubing

The act of smearing Siracha Hot sauce on one's genitals and masturbating profusely.

Dude you should really try magma-cubing, it's amazing!

Magma-cubing by Definitely sfx February 15, 2022

magma dick 

an alcoholic drink made from the components: Vodka and Tabasco sauce.

Guy: Yo dude you wanna try some magma dick?
Girl: Yea sure
Guy: *pours a cup*
Girl: *Drinks* ... *vomits instantly*

magma dick by sayduhhhh April 6, 2011

Magma Mouth

A rarely dangerous, but often bothersome medical phenomenon in which molten rock is violently projected from the mouth. Generally associated with Lava Teeth dental disorder or the gum disease known as Gingivitis.

"Sweetie, my penis feels a bit charred."

"Oops! Must have been the Magma Mouth."

Magma Mouth by emmaruby January 13, 2008