When a retard is shouting but still sounds like a mumble because you can't understand what he's saying

Yelling so loud that you can't understand what they are saying, loud mumbling.

The quintessential level-up from humbled, when one is humbled beyond other words.

A mix between shouting and mumbling.

Shouting and mumbling

Singing, humming, and mumbling your way through a song, that you don't entirely know all the words to. Or don't even have the faintest idea what the tune is, yet you still feel some innate obligation to vocalize some noise with the song.