The dialog might as well have been:

June: "Oh, no! My baby is growing a mustache! Ward, what are we going to do?"

Ward: "Dear, this is just a typical teenage thing."

June: "I want you to go up there and forbid it."

Also:

Isn't it odd that Wally would not have seen Eddie or Lumpy (or anyone else from school) during the vacation?

When I was on the IMDB board I mentioned that many times. Did Eddie and Lumpy spend a wild week in Vegas so Wally never saw them? It was so contrived how Wally was home all week stuck in the house watching his mustache grow. He never saw any school friends who could have given their opinion. They could have at least showed Wally on the phone talking to Eddie about not seeing him. The way those girls treated Wally in the classroom was so MEAN and unfeeling.

Julie thought Wally was so suave and sophisticated at the restaurant and all of a sudden he's naive and immature. I hope I mentioned Julie as a mean girl.

A solution might have been to have the Cleavers visit Aunt Martha during the break. (oops-what would she have said about Wally's mustache? Egad-I don't want to know-they might have had to take her to the ER!)

I thought it was funny how they used the phrase "raise a mustache" (instead of "grow a mustache").

That is a great old expression, "Raise a mustache." I heard that in a movie set in 1900, "I wonder if I should raise a mustache."

I thought Wally looked very nice, all dressed up and well groomed. I just didn't see why they laughed except it was the moral to tell teenagers not to grow up so fast and what is good for one is not necessarily good for all. I still can't understand why Wally likes Julie after that. She humiliated him in front of everyone. Did you ever go to school thinking you looked good and someone knocked you down?

Yeah, heaven knows, Wally has enough other girls to take out. Maybe he could ask out one of the other no-name girls that were standing with Julie. (Oh wait, they were laughing at him, too...)