An Uh-huh(noun) refers to a
person that is an idiot or
moron. An Uh-huh always lacks common sense and often are illegal immigrants who moved to another country with preperation.
The term "Uh-Huh" originated from idiots always saying "uh-huh" to anything that is said to them.
"Sir you are a
f*ckin' idiot!"
"Uh-Huh"