Lyrics of Just because

Little girl: "this looks like a good place to put this letter y. it's a letter that comes after x and just before z. i bet grover doesn't know what this letter is!"
Grover: "skedaddle... skedaddle... skaddle-up! i bet you think grover does not know what this letter is."
Little girl: "well, grover, do you?"
Grover: "no."
Little girl: "i didn't think so."
Grover: "it's very pretty! it starts out with one line at the bottom and splits into two lines at the top."
Little girl: "that's what it looks like. but what is this letter called?"
Grover: "i do not know. tell me."
Little girl: "y." (sounds like "why?")
Grover: "because i want to know."
Little girl: "y."
Grover: "so i can be smart. please tell me."
Little girl: "i already did!"
Grover: "you did?"
Little girl: "hmm-hmm."
Grover: "would you tell me again?"
Little girl: "y."
Grover: "because i did not hear you before."
Little girl: "y."
Grover: "i don't know! maybe my ears are on backwards! how should i know?!"
Little girl: "grover, let me give you a little hint."
Grover: "all right."
Little girl: "this is the letter that you hear at the beginnings of words like yellow, yarn, year, and yo-yo."
Grover: "hmm... it has a cute little yih-yih sound, but i do not know what it is called."
Little girl: "y."
Grover: "maybe because no one will tell me!"
Little girl: "y!"
Grover: "how should i know?! maybe no one likes me!"
Little girl: "y!"
Grover: (crying) "i don't know why no one likes me! i try to be so nice..."
Little girl: "the answer is y! y-y-y! the letter is called y, like w, x, y, z!"
Grover: "...that's the letter y?"
Little girl: "that's what i've been trying to tell you!"
Grover: "... i am sooo embarrassed..."