Slang from Wales: When you think someone is lying you'd use it to show that you know/think they're lying. Also this is used with a gesture where you brush your hand up from the neck to the tip of the chin.
Muh, you didn't do that.
Noun: Short for motherfucker. Universal word used for any situation. Popularized by Claire Drake.
“It’s cold in this muh”
“That muh is so stupid”
“Is that muh open”
A word used to shut down anything you don't want to listen too, especially stupid questions, things coming from anyone below you in social hierarchy.
Mike: Hey Tom, why don't you like me?
Tom: Muh!
Mike: Oh okay...
Kevin: "Did you do the math homework last night"
Sam: "Muh"
Kevin: "I take that as a no"
Sam: "MUH"
Muh is used to express displeasure, but a muted displeasure. Sort of like “bruh.” Muh is only used with a lower, more passive tone. Muh can be used to express being down bad as well, such as if you find out someone is posing as you.
Bro: Did you do the math homework yet? It’s 100 problems!
Bro 2: muh....
An abbreviation of the word 'mush' meaning mate.
'Hello, how are you my friend?' can be shortened to 'Alreet muh!'