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Gas bag = wind bag, pompous, talkative, bloviator. One who bloviates - constantly talking, often in a longwinded pompous manner. Many of these folks like the sound of their own voice - often unaware of those around them who are often laughing at them behind their backs. These folks are often very vain and conceited - impressed by their own self importance. Many politicans are gas bags, full of empty hot air.

These folks are sometimes referred to as popinjays.
Many politicans are gas bags - long winded pompous people who are usually bloviating over their own self importance.
by WET CARGO BOY March 18, 2006
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1. Someone given to empty or boastful
2. Talk to someone about nothing in
1. She's just a gasbag.

2. Jane and I are having a gasbag. Jane and I are gasbagging.
by PLM January 20, 2005
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1. A special bag made to store and transport gas.

2. Someone who talks a lot or is full of hot air.

3. Someone who farts a lot.
Industries use gas bags to ship and transport gas for easy handling. My co-worker must have a lot of energy to talk a lot. My friend is full of gas cause he farts a lot.
by JayEssBee85 December 19, 2013
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Someone who talks utter bullshit, and is known to be a liar or a gossiper.
"Bruv I got 100% on my maths test." "Wow Shafin, you are such a gas bag"
via giphy
by Faiyaz69 July 19, 2016
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