Somone who is unable to make logical decisions because they dont posses a brain in their head, just simply fresh air.
Why have you sold your car for half its value you balloon head?
by nutman17 May 9, 2007
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A prison term for someone that is beaten severely to the point that their head is swollen.

See also: pumpkin head
Hey, that snitch was turned into a balloon head.
by smartypants October 6, 2004
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1. An extremely unintelligent person with a large ego or bravado.

2. A male airhead whose ego inflates and deflates like a hot air balloon in his interactions with his peers.

3. A person whose convictions are easily swayed or comprimised.

4. An Irish Painter who thinks he's American
While Dave appears to be normal upon first meeting him, he is actually a Balloon Head.
by B-Dogg November 25, 2004
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When a penis head is so thick the owner can push tons of blood into it making it look like a balloon.
I would have never believed he had a balloon head until I saw it for myself.
by KillMePleaseBHS September 30, 2017
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Wow that Psychopath has balloon’s head disease, don’t say the real word otherwise he’ll kill us all.
by Sonar System September 15, 2023
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1 - Refers to when your mind is filled with too many random things and preoccupations, and your thoughts get incoherent, hence making you a balloon-head. Gets it's sense as being a metaphor for a balloon, which is always full and big, but always filled with nothing.

2 - Can also be used as an insult, in a similar sense to "empty-minded" or "thoughtless".
• I've got such a balloon-head today. Didn't sleep well, and the tests are next weekend.

• She's such a balloon-head. Her boyfriend goes on dates with her brother, and still, she always finds reasons to forgive him.
by bolasgrandes de cuiabá February 24, 2023
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A balloon head is someone with an abnormally large forehead and an abormally small nob. He instantly picks up girls signals when they are, to quote mr balloon, “gagging for it”.
Balloon head is so cocky, which is surprising due to his shrimp cock
by weloveminecraft April 4, 2019
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