Hyup - correct all up and down the line .....
except for one error.
The title.
Mouth Breathing ?
The correct denigration is "Mouth Breeding". *s*
Hmmm - interesting - I searched both terms in 'google'.
Apparently, 'mouth breather' is considered the derogatory term TODAY.
However, it had ALWAYS been 'mouth breeders' - meaning "a lower form of life than human". One of those terms that seems to be lost to history by idiots that either can't pronounce terms correctly, can't spell, or can't listen very well.
Oh well.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...