I think what you are looking for is from a stand-up monologue from "The Boyfriend Part 1"
Of course when you're a kid,
you can be friends with anybody. Remember when you were a little kid what were
the qualifications? If someone's in front of my house NOW, That's my friend,
they're my friend. That's it. Are you a grown up.? No. Great! Come on in. Jump
up and down on my bed. And if you have anything in common at all, You like
Cherry Soda? I like Cherry Soda! We'll be best friends!