Leave It to Beaver S04 E21 The Big Fish Count

"Gee, Wally!"

Eddie makes it known to everyone that he's just gotten a job down at Parker's Pet Store, which happens to be the store that's holding a contest where you guess how many fish are in the tank. After hours of counting and re-counting, Gilbert suggests to Beaver that they ought to just ask Eddie for the count, but Beaver is a bit hesitant at cheating.