In this episode, Shawn says that he and Cory have been best friends for eighteen years (which is approxiamtely their age). However, in "It's Not You... It's Me" (Season 5), Cory and Shawn are shown meeting at the zoo, and are depicted to be about six years old.
Topanga: I can't
Cory: Oh, ya hate to see that!
Topanga: I... I...
Cory (whispering): Do.
Cory (quietly): We got "I", we're looking for "do".
Cory (to Amy): What's best for us, Mom, is for you to trust us! I love her, alright?! I will always love her! And you know something else, we didn't get married! Because she wanted you to be there!
Eric (to Rachel): Hey, I bought you this bird. It reminded me of you because it has bright red feathers...and it eats like a bird.
Eric: Jack, Jack, Jacky, Jack, Jack. Live a healthy life, eat all your vegetables, honor your father and your mother; and heaven will reward you with a hot, hot, hottie, hot, hottie, hottie, hot, hot for a roommate.
Jack: She just came off a bad relationship, she's vulnerable...
Eric: And both of us are going after her like she's some kind of cheese ravioli.
(driving home after Topanga freezes at the alter)
Topanga: I don't know what to say.
Cory: 'Do!' You know, do! It's the first half of your favorite word; don't!