Where a group of people circle around you and fart in your face for sexual pleasure.
Man Rob really enjoyed that Gas Chamber earlier.
by Bearish_Rouge November 20, 2019
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The act of farting in a girls mouth and making her hold her breath while you have sex.
James: Hey dude how was hanging with your girlfriend last night?

Shane: We had sex and i gave her the Gas Chamber
by CrazyWitchGrassBrotherTrucker November 13, 2011
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The sexual act of one sitting on their partners face with the anus covering their mouth, and passing as much gas as inside your body. The victims nose should be squeezed shut so he/she has to breathe it all in through their mouth. Also, some variations include the excrement of faeces into their mouth.
Husband: Shut up woman, and make me a sandwich, otherwise I'll Gas Chamber you later tonight, capiche?

Wife: Oh please no!
by chezmonger August 3, 2010
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When you fart in an elevator and walk out just as someone enters and the doors close before they have any chance of escape. Much like the dutch oven, it will render your victim helpless and paralyzed.
As she was leaving the building, Sarah gave yet another victim an unexpected gas chamber.
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When lying in bed with your spouse, you grab her/him tightly, wrap yourselves completely in the blanket, and rip ass. It causes the fart in the air to become highly concentrated and, since you and your spouse are so close to each other, the temperature rises, further strengthening the fart. Meanwhile, your spouse is unable to move, which forces her/him to smell it. You of course are immune to your own farts.
I don't know what to do. My wife left me because I was gas chambering too often. I miss her so much. I miss her smelling my hot, concentrated farts.
by rogerthewhale November 24, 2010
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Right before sex (during foreplay) you fart in a condom and stretch it around your partners head (at least to the nose).
Dude, I has my girl the gnarliest gas chamber last night.
by Obes Obeltons January 21, 2014
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