Wally is heading over to his girlfriend Julie Foster's house for an impromptu visit, with the expectation that she'll be at home with nothing to do but wait for him. What Wally finds out, as does his family and his friends, is that Julie has a previous engagement: a date with someone else. That date is with Wayne Gregory, a new student to their school. Wally learns through the grapevine that Julie finds Wayne mature, while Wally naive and immature in comparison. Wally comes to the conclusion that Wayne's perceived maturity is due solely to the fact that he has a mustache. With a one week vacation from school on the horizon, Wally plans to grow a mustache within that time to impress Julie. Although his parents don't like the idea of the facial hair, they are not going to forbid him from growing it or keeping it for the first day back at school. The mustache does end up impressing Julie, but not quite in the way Wally had envisioned. Written by
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Well, Beaver, I thought you were going to go by Wally's school and watch him practice.
Oh, we were, but Gilbert said there was always a lot of girls hangin' around after practice, so we didn't go.
You mean you and Gilbert don't like girls?
Well, we like girls OK, and we like sports too, but when you mix the two of them together, neither one of them are any fun.