What started out as a normal sales pitch quickly turned into a fun surprise for a 13-year-old boy selling snacks for his school fundraiser. On Tuesday, a video began making the rounds showing the teen meeting Nancy Cartwright, the voice of 10-year-old Bart from The Simpsons, outside of a grocery store. At first, he thinks he's just talking to a sweet women who will eventually buy his chocolates; when Nancy switches into her Bart voice, he casually says, "That's a really good impression." But soon enough, he realizes that he's talking to the actual voice of the actual cartoon icon, and the look of panic and surprise on his face is too funny. Watch the viral video above now!