It’s basically another way of saying duh
Jessica :Mr.Cooper aren’t we going outside today ?
Mr.Copper: Duh huh Jessica thanks for reminding me .
The difference between two agreements one of like ah huh and one of less truth
Two type's of agreements... Uh huh-ah huh.
Tom...
Hey Joe.... Chris ... you know know Joe right ?
Chris... Ah huh.. Like
Joe.. Uh huh.. Less truth
When you misheard what a fellow human being said, so you keep repeating this as a response.
Tyler: Yo did you get the Crsshshdawud
You: Huh?!
Emi: Did you like the new anime called 'djawiodfh'
You: Huh?!
A reply used by close friends as a way to buy a few extra seconds to think of a lie.
Bill: Did you have sex with the maid while we were out on the mountain?
Matt: Huh?
Bill: Did you bang the maid while we were skiing?
Matt: No, I was at the shop getting my bindings fixed.
A twitch chat (betterttv) emote that is used when the streamer says something that is suspicious
Streamer wins against an annoying opponent
Streamer: FUCK THEM KIDS
Chat: HUH Auuuuughhhhhh