Ferb than concocted a plan that involved Ferb telling Buford that Isabella had calmed down and that he was safe. As soon as he left the Flynn-Fletcher residence Isabella was waiting on her front porch and ended up chasing Buford all the way back home. Ferb witnessed all of this and laughed. From this day forward Buford vowed to never pull another April Fools Day Prank on Isabella. Ever. Again.