Gamer Girl - Super Smash Bros Brawl's Gurl Gamers

it made me understand less
how are they loud when there's no mic system

Well, they walk around as Peach and Zelda, doing nothing but spamming taunts, brandishing their "gurl gamer" status.
"Screaming out loud" wasn't literal. They don't even fight. They're not even good at the game. All they do is start spamming crouches near people playing as male characters, trying to attract attention.
What I'm saying is, after playing Brawl for the entire 5 years it was released, I get mistaken for a guy a lot just because I use the male figure and I see this type of behavior too often :I