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10.
Basically, "Hotboxing" is when you smoke weed via Joint, Blunt, Bong etc. in an enclosed room or vehicle. There are no spaces for the air to come out, so the weed stays in the area supposedly making you even more ripped because of the second-hand smoke you're inhaling along with the actual puffs.

But in reality, it really does nothing. The part in the weed that makes you high is THC. Ones you take a hit, you inhale all of the THC into your body, and none is blown back into the air. All of the second hand smoke does not make you higher, it just fucks up your lungs worse than normal. The only reason people thinks it works is because of the placebo effect.
Jamal: Yo we hotboxed my dads Cadillac yesterday, you should have reached!

Thomas: Well actually, hotboxing doesn't work, it is only the placebo effect changing your mindstate. You cannot get high off the second-hand smoke that contains no THC.

Jamal: Fag.
by KushMasterFlex December 30, 2010
 
1.
A hotbox is an air-tight room or vehicle that contains one or more pot-smokers smoking one or more joints. The exhaled smoke and the smoke coming from the joint, unable to escape, circulates and thus is breathed in and is not wasted. Smokers in a hotbox may find themselves totally fucked beyond the point of speech after about 30 minutes. Hotboxing is an event that requires some amount of planning, but ensures optimal weed usage.
Guy 1: "Dude, my parents are on hliday and we're gonna hotbox my bathroom!!"
Guy 2: "SWEEET!"
by Rep August 24, 2004
 
2.
a sealed car with marijuana smoke in it; stay in a hot box to get more high
ey man, lets get messed up tonight, lets hot box your car!
by suj March 21, 2003
 
3.
when u smoke in an enclosed area so that it holds all the smoke
shit all we have is one j....so lets just hot box in phipps car and get high off those fumes
by brad p. nigga May 06, 2005
 
4.
When you smoke in an enclosed area(Car, SAUNA, Tent, small room) and the smoke stays in the area and you are contnuously breathing in smoke... the purpose is to FUCK YOU UP! Have fun.
Smoke a blunt with all the windows up!
by Mike Lancea August 29, 2005
 
5.
smoking marijuana in a vehicle or room until it is filled with smoke.
we smoked a blunt in the S500, it was hotboxed in 5 minutes.
by lex February 13, 2003
 
6.
To smoke out a closed area.
Lets hot box that bathroom dawg!
by Jeff May 27, 2003
 
7.
Smoking cannabis/marijuana in smallish inclosed space causing the smoke to fill the room and be reinhaled.the room often starts to heat up during the procces.Often done more by high/college students then older smokers.
Although many belive hotboxing gets you more high this is untrue.The active ingrediant in marijuana is THC. When you inhale the THC is absorbed by the aveoli in the first 3-5 seconds. Some say they get more high in a hot box this is a plucibo effect.
by Hymen July 10, 2006