After telling his Stories, he starts to strangle Simon and concludes that Simon is an imposter and
Grampa Simpson: It was a War to end all Wars, but Pepsi wouldn't give up. They continue to Challenge Coke. WHY YOU LITTLE!!!! Listen you Imposter, i know who you are! The only thing i don't know is what you've done the real Bart! And for Pete's Sake, i need him back alive! Where is he! WHERE IS HE!!!
Simon Woosterfield: I don't know what you're talking about.