Fast Talker, Fast Talking, Fast Speaker, Fast Speaking
noun, の adjective
When you have a fast mouth, you're probably a fast talker, right motormouth?
はやくち
Remember how body parts often change even jukugo words to kun'yomi readings? That's what happened here too. Both readings are kun'yomi, making this one はやくち.
兄は、とても早口です。
My brother is very fast talker.
早口でオーダーしたので、生ビールが一つの代わりに五つ来た。
I spoke fast when I made an order, so I got five beers instead of one.
日本人は、早口が上手な人が多いですね。
Many Japanese are good at fast-talking.