G'wan, b'y - A phrase that sounds like it came out of a sailor's mouth wh

A phrase that sounds like it came out of a sailor's mouth when they're yelling at the sea and also at you for being an idiot.

G'wan, b'y! You failed your math test again?

G'wan, b'y! You tried to fix the sink and now it's leaking everywhere!

G'wan, b'y! You actually believe that lie?