When someone has a 'gabby-mouth', it means they are loud and talk nonsense. It can also mean they talk a lot too.
1"Awww man I told sandy I liked Jane better than Fiona, my prom date!"
2"Yesh so...."
1"She told Fiona!!!!"
2"Oh shoot; what a gabby-mouth man!"
2"So you got no boo?"
1"I got no boo..."
2"Yesh so...."
1"She told Fiona!!!!"
2"Oh shoot; what a gabby-mouth man!"
2"So you got no boo?"
1"I got no boo..."
by Flora Veale August 6, 2005