Darwin is too polite to speak his mind, so Gumball teaches him to be direct via an epic battle of insults.\r<br>Watch The Amazing World of Gumball only on Cartoon Network!\r<br>\r<br>Watch more Amazing World of Gumball videos and play games:\r<br>\r<br>\r<br>Check out our Cartoon Network Facebook pages:\r<br>\r<br>
