Darwin lends his pen to Banana Joe but, when it comes back chewed, Gumballs thoughts turn to revenge.\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
