It’s type of humour which is beyond “dark humour”. It’s usually used between friends on same wave length and sense of humour.
Hey Bro! Ready for some furnace humour joke?
Yo! Man bring it on!
“You know what’s difference between Jew and pizza?”

Uh no mate!

“Pizza doesn’t scream when you put it in the oven!”

Oh mate that’s some furnace humour ! We will end up in hell!
by voyceboy April 19, 2018
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The extreme discomfort/cramping/sweating associated with the overindulgence of too many hot wings (or other spicy food), too much cheap beer, or a combination of them both.


John missed football practice because his furnace ass kept him in the bathroom all afternoon.
by PR Gal 60010 February 17, 2009
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scary place near Tarrtown that bloody people jump out in front of cars randomly or just a fun place to scare someone by pretending to be a bloody person that jumps out in front of cars randomly. (Like how I scared Ashley Minteer really bad one night)
Murphy: "Hey we'd better take Furnace run to get to my house, its the fastest way."

Mo: "Ok, go."

Me: (jumping out) ROAR!

Ashley: "AHHHHHHHHHHHHH!!!!!"
by Bastard Ro June 17, 2004
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When you and your girl friend are making love under the sheets that it gets so warm you feel like your boiling.
"Damn baby" "what hun" "I think it feels like a Sex Furnace"
by Northern Punk February 18, 2014
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When one slices the cap off of a hot pepper and uses it to apply the burning irritant to the rim of a girl's asshole, finishing by inserting said pepper into the vaginal crevasse.
Mildred mentioned that she wanted to spice up our sex life...so Thaddeus gave her the Basement Furnace
by The Boondock Saints September 8, 2008
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You and your buddies go and eat a shit ton of Spanish food then proceed to fart in eachothers mouths and ignite the flatulance
Jordan gives the best Spanish furnace’s ,dev now has 2nd degree burns on his lips and alex has no eyebrows
by Alexandevo July 4, 2018
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First entered the vernacular on Metroboards.com. This term, taken from the name of an old Confederate-owned iron smelting furnace in Lee County, refers to the processes of the human digestive tract and the resulting noxious gaseous emmisions. Allusions to the odour of burnt Ewok hair and flesh are apparent.
"I'd better sleep on the couch, honey; those tacos will have the furnace of endor smelting all night."
by grain wetski July 18, 2006
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