Harry and Maxine teach Laverne Spanish in this episode. However in season 1's "What's a Father to Do", Laverne is shown to speak fluent Spanish and Harry is the one who is said to be learning.
In "And Kevin Makes Three" from season 7 Harry and Maxine teach Laverne Spanish. However in season 1's "Whats a Father to Do", Laverne is shown to speak fluent Spanish and Harry is the one who is said to be learning.