Gas-mask 

A face mask designed to block all chemicals and dust from getting into your lungs and killing you.

WW1, Germans shoot some chlorine gas mortars, British people put on their gas masks. some dude lost his Gas-mask and dies of rotting lung.

Gas-mask by Gas-mask child December 6, 2010

gas mask

Drug paraphernalia used to smoke marijuana. To make it, one must take a regular military gas mask, but attach a bowl piece to one side. This allows whoever is wearing the gas mask to inhale marijuana, then exhale the smoke without blowing the pot out of the bowl piece. Another effect is mask creates a hotbox.

Yo, Trevor just got this awesome gas mask. You should come hit it.

gas mask by Shawn Maglicic April 17, 2006

gas mask

when someone farts into their hand, and smuthers it on to you nose.

brother: farts in his hand
brother: comes toward you and gives you the gas mask.
you: *BARF!*

its pretty self explanitory.

gas mask by yo'layla July 28, 2007

gas mask

after a long hard sporting event, the athlete takes the cup out of his jock strap, and procedes to shove the cup over a fellow teamates nose and mouth.

fuck that asshole, i hated when rich gave me that gas mask last summer

gas mask by Jermaine Rutt July 2, 2006

Gas Mask

To take a persons head and pull it to your ass and fart on their face.

I just gas masked Anthony. LOL

Gas Mask by murder my sister June 7, 2011

gas mask

this happens when going to town on a chick's vagina, and she farts in your face.

Jack's face was buried deep in Sally's vagina, suddenly she gas masked him.

gas mask by jade09 July 2, 2012

gas mask

When you cup your hand around a fart and enclose the hand around your friend's, girlfriend's, or any number of people's nose and mouth.

Yo bro, you just got gas masked, and it smells terrible.

Aww man, I just got gas masked.

gas mask by Greg April 24, 2004