mumbletard 

Despite being incapable of stringing two cogent thoughts together, this low-intellect goober will drone on endlessly, boring everyone with their sophomoric points of view. Their speech is often unintelligible and paced like a metronome. They are completely unaware that their audience just wants them to shut the fuck up.

What's up with Barry? He's driving everybody crazy.

He hasn't been the same after he lost his job at KFC.

Now he's just a mumbletard who can't shut up with no job and no friends.

mumbletard by Fast Eddie, AKA The KOS October 26, 2013

Mumble Rap 

'Mumble Rap' Term Used For Rappers With No Sign Of Authenticity In Their Rap Usually Seen As Artists That Bootleg, Sell Outs, And Errant Viral Rappers With Rap That Can Come Out As Unclear.

One Of Those Viral Hits This Year Was Blatantly A Trash Mumble Rap.

Mumble Rap by Mix-Race Man On Road September 15, 2018

Mumble rap 

Rap music for retards. Mumble rap is considered a subgenre of hip hop music, but really doesn't even deserve to be associated with hip hop music at all. Hip hop is supposed to be about lyricism, wordplay, storytelling and poetry, which mumble rap has none of so it's not hip hop. It's just a bunch of drugged up retards making noises with their mouths and when you can actually understand them, they're saying nonsense. Examples of mumble rappers include Lil Uzi Vert, Lil Yachty, Young Thug, Post Malone and Future. Mumble rappers tend to sing-rap rather than actually spit verses, which is another reason why they shouldn't be associated with hip hop.

Stupid person: I love Lil yachty so much! Lil Uzi Vert is also great and Post Malone too! Those are the best hip hop artists for me.
Smart person: That's not hip hop, that's mumble rap! Mumble rap shouldn't even be associated with hip hop.

Mumble rap by Icy Wyte May 2, 2018

mumblecore 

A genre of independent films in which the characters are involved in a personal crisis. Known for their realistic point of veiw, these movies are the eyes of the just-out-of-college generation.

Billy: Hey Sally, have you seen Mutual Appreciation yet?
Sally: Uhm...I've never even heard of that...
Billy: It's totally mumblecore, you'll love it.

mumblecore by hudgoesplatt92 May 22, 2008

Mumbles 

Mumbles is a character by Edbassmaster on YouTube. Born in the 60's in Malt Lickie, Texas; he often has trouble communicating with people and often gets frustrated.

Mumbles: Can you put malt lickies on that?

Car Salesman: No, I'm not going to put anything on it.

Mumbles: Well, can you bartle doo the price?

Car Salesman: The price? $12,000.

Mumbles: Right, but can you bartle doo?

Car Salesman: I'm not sure what you mean by that word.

Mumbles: Well, can you just kaypomasodums with the malt lickies?

Car Salesman: No, if you buy, you do it.

Mumbles: I'm gonna buy it! Just kaypomasodums with malt lickies!!!

Mumbles by Metallica Bass Player August 7, 2010

Mumble rap 

The opposite of lyrical rap. Kids age 12 and under love mumble rap. Everyone else 13 or older hates it.

Mumble rap is for 10 year olds don’t listen to it.

Mumble rap by Kidswillbekids January 16, 2020

Mumble Rapper 

A mumble rapper is someone who is considered a rapper, but simply mumbles words that make no sense and no-one understands.

guy 1- DUDE!! how good is Chief Keef?

guy 2-Shut the fuck up Cody, he's a mumble rapper.

Mumble Rapper by the uknown October 16, 2016