On a technicality, Wally is able to convince his parents to let him throw a party on Saturday night. Everyone in the house, wanting it to be a good time for all, are excited in preparation, including Beaver, despite he having to do no prep work. Beaver's attitude changes when he learns from Wally that he isn't invited to the party, which, although they don't totally agree, is supported by their parents. Upon this news, Beaver feels like the mad but forgotten member of the household. In order for Beaver to get back at Wally but still not totally ruin the party, Gilbert suggests that Beaver plays some gags, like putting fake cheese in the sandwiches and rubber spiders in the curtains, which Beaver does decide to do. On the day of the party, Wally, on a suggestion from his parents, has a change of heart and decides to let Beaver come to the party. Beaver's excitement at being able to attend turns to panic when he finds that undoing the gags is a little more difficult than putting them in... Written by
Did You Know?
One of The Beaver's pranks to sabotage Wally's party was to put a current-interrupter in the plug of the record player, so that the music would stop, then restart, every few seconds while everyone was dancing. Logically, every time the player re-started, the record would have to re-start, gradually spinning up to speed before the music would sound "normal". In the show, however, the music simply re-started at regular pitch and rhythm, as if it were playing continuously while the sound on a separate amplifier was cutting in and out. Record players didn't work that way in those days. See more
[Lumpy thinks that Eddie has been pulling practical jokes
Ya know Eddie, this seems just like the kind of thing you would do.
Oh sure, I'm the kind of guy that goes around putting rubber cheese in my own sandwiches!