a pompous person who talks too much, a braggart
Why do have a windbag like him representing us?
What a motherfuckin' windbag! He just talked for 20 minutes, yet said nothing.
A person who is ashamed to admit he/she has no knowledge about a question asked so tries to hide his/her ignorance by inanely prattling on, dancing around the obvious and useful answer; "I don't know", which would allow you to get on with your day, i.e. go find someone who knows what the hell they are talking about.
You: Good Lord! My ignorant boss just refuses to say "I DON"T KNOW" so I had to stand there listening to his worthless bullshit for ten minutes. Finally I just walked away and left him jibber jabbering away. He's probably still talking for all I know.
Sympathetic coworker: Yep, he's a windbag alright. By the way, I overheard your question and the answer is yes.
an officer, usually a major or above, who stands on a stage/podium during a briefing, ceremony, or just stops by your shop unannounced and tells you how dumb you are and how great they are. if you listen to them at all, you might hear something about drinking and driving or motorcycle safety.
the new commander is a real windbag. we had to stand at attention for the whole hour.
Rush: Screw the environment, who cares if your kids inherit a fucked up planet, you'll be DEAD!
A derivative of the teabag. When a woman lies on her back and a man puts his scrotum in her mouth while facing her feet. The man then farts in the woman's face. There is a version of this called the 'freckled windbag' or 'speckled windbag', which is when the fart is moist and the woman is sprayed with fecal matter.
My girlfriend enjoys my farts so much that I gave her a windbag for her birthday.