An Extremely Goofy Movie Easter Egg - Huey, Dewey and Louie

It's the part when Max,PJ, and the other guy are on their way to college and they begin to talk. At a point PJ says something and Max gets annoyed and says Hewie Dewie Louie, who are of course Donald Duck's nephews. Donald Duck is a good friend of Goofy which is no other than Max's dad.