Mike: I always thought our grandchildren would come visit us in this house.
Carol: Oh, Mike. You know, this is going to be our last night in this bedroom. Why, Grandpa Brady.
Mike remarks to Carol in bed that he always thought they would see their grandchildren in this house. Carol tries to distract him by reminding them that this will be their last night in the bedroom and when Mike removes the magazine from her lap she calls him "Grandpa Brady", expecting him to get frisky.