The female version of tea bagging. A woman lowers her vagina over the nose and mouth.
Tristan: I fell asleep on the couch and when I woke up Blaire was giving me a Gas mask
by Harbourama December 21, 2014
The female version of tea bagging. A woman lowers her vagina over the nose and mouth.
Tristan: I fell asleep on the couch and when I woke up Blaire was giving me a Gas mask
by Harbourama December 21, 2014
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.
by jade09 June 29, 2012
1) To cover up the sound of a fart by replicating the sound, or a similar sound several times.

2) To make a sound that sounds like farting again at least once so that the people around you realize that it was a funny noise and not you farting.
"It totally sounded like I blew one in history today when I sat down, but I gasmasked it by rubbing my hand on the desk to make more fart noises"
by LordRaccoon May 26, 2009
One of the greatest HipHop albums ever.
Apollo Brown produced it, Journalist 103 is rappin over it and it sounds just fantastic.
Every real hiphop head should have a copy.
-What was 2011's best underground-LP again?
-'Gas Mask' by the Left.
-Ah, right, I must have been listening to the radio too often...
by HipHopHead February 16, 2012
The action of cupping your anus with your hand farting and then clenching your hand into a fist so none of the fart can escape. after you simply cover someones face with your hand or gently toss it in the direction of there nose so they can wear your gas mask.
my little brother is sitting on the couch enjoying cartoons when i fart in my hand sneek up behind him and cover his face giving him a gas mask.
by dj fraustin March 23, 2011
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
by Jermaine Rutt July 02, 2006
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