What's So Bad about the Philistines?

When Mango's kids show off their bad table manners, he scolds them for being Philistines... but do the Philistines actually deserve their bad rap? Was Goliath the actual underdog? And why did someone make a video game that featured them? Will, Gabe and Mango answer one of the most important question on everyone's minds in today's 9 Things: What's so bad about the Philistines?