Grandpa Lou takes the kids to a Bingo game at the Senior Citizens' Center, where he initially does not have much luck. However, the babies roam through the center to find "Lady Luck", who turns out to be the manager of the center. The babies can do the cha cha cha. They danced faster With the cha cha cha.
This was David Doyle's final episode as Lou Pickles. David Doyle died the same day as Andy Houts. This episode was dedicated in his memory. After this episode, Joe Alaskey takes Doyle's place as the voice of Lou Pickles for the rest of the episodes.
Since David Doyle died on February 26, 1997, this episode was produced at least a year and a half before it aired.
During the bingo match, listen closely to the numbers; they aren't the same as the actual bingo formation, which is 1 to 15 under the B, 16 to 30 under O, etc. The announcer drew the numbers as "N-2", "O-2", etc. At first, I though this was one of the center's techniques to keep the patrons "quiet and relaxed" by not winning and yelling out "Bingo!", but I later found out that Grandpa later won with the erroneous numbers.
When Grandpa has 1 more square to go, the bingo board already has a bingo diagonally.
In "Lady Luck", when the bingo caller says O7, Grandpa puts it on an I square.
The bingo numbers we hear throughout the episode are O-2, I-2, B-8, O-2, B-45, G-4, O-7, B-12 and N-16.