Hotbox

[Tina]

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.

[Couch Potatoe]

smoking marijuana in a vehicle or room until it is filled with smoke.

[Tanya Shivari]

To seal off a room or vehicle so no smoke escapes while enjoying [marklar]. Not neccessarily the state of the room once it is filled with said smoke. Once smoke has filled the space it is simply said to be smokey in here

[Sarah]

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 youre 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.

[Julian]

When you order your favorite [pizza] in [Indianapolis]... [instant high] #hotboxpizza

[Hina Muqadas]

Pretty much the greatest thing that has ever been thought of by anyone. It is when you turn off your car and [roll up] the windows and smoke Marijuana. The smoke fills the car and you breathe in [secondhand weed] smoke as well as the smoke you inhale from the bowl, bong, joint, etc. It works best when you use more than one method of smoking together, so you get really, really, [really fucked] up. Awesome.