A heavy breather is a generic name for a person that is in a position of power and influence. They do not breathe any louder than the rest of us, but their breath/words have a larger impact on society. This term usually is used reserved corporate executives or high level politicians.
"So dog, whaddid ya do today?! Dude, I had to sit in this meeting with a bunch of heavy breathers"
A mechanical engineer who is much inferior to their counterpart the electrical engineer. Often found staring at a machine with mouth agape breathing through their mouth in a stupid manner and blank expression on their face wondering why the machine will not work. Luckily an electrical engineer is never far away to save the day for the mouth breather.
Hey Joe check outthe mouthbreather staring at the labeler like an idiot. Do you think I should go help him out?
Someone who believes anything said on fox news, no matter how blatantly absurd, ludicrous, insane, stupid or eventually discredited it eventually becomes.
My pal John is a great guy mostly, but he's such a foxygen breather he still believes in the "death panel" bullshit about healthcare reform.
Someone incapable of breathing out their nose because their mouth is always yapping. They can often be seen in forums where they're assumed to be clever. However, assumptions usually land you in jail.
Kia salespeople=everybody at Kia, involved with Kia or even knows about Kia is a mouth-breather.