A room, vehicle, or other space that is closed up while one or more people are smoking a lot inside it. The air becomes hazy and hard to breathe in, and stains every object and person in the space with the smell of the smoke.
This definition applies to legal and non-drug cigarettes and cigars, different and separate from a marijuana hotbox.
Nonsmoker: Ugh, this place is a total smokebox. Can't you take that outside or open a window?
The art of "throwing a smokebomb" is when a person leaves very suddenly without telling anyone. Usually when a group is out drinking and someone has had too much.
Joe threw a smokebomb last night. I think he'd had too much to drink.
This is when you meet someone that is Shiny and New, and they actually turn out not to be a cunt. So you're able to chat them up and have a good time conversating with them. Then when the time comes to part ways, you're so caught up in having a good time with them your dumb ass forgot to get ANY kind of contact information. And you know deep down that you will never see them again. Thus you got caught up in the smoke and grenaded any chance of anything with them.
Bro 1: Bro! I meet this girl at the DMV and she was smoken hott. She is the one, bro! She's the one!
Bro 2: Did you get the Number/Social media/Name or anything?
Bro 1: F***! no! I let myself get Smokebombed.
The act of smoking marijuana in an enclosed area to which no outside air can enter maximizing the effect of the marijuana through both first and second hand smoke.
When you smoke weed and close up your iron man suit to start smokeboxing and stayhigh