The one where Adam shows his age and obvious childhood preoccupations

We're on a Sunday drive around the suburb; scouting out our next dream house (a house we're still a few years off having). The houses in the particular area where we're at today are...well...pretty stunning. Adam: Next house, hey, what do you think instead we buy a block of land and build ourselves? Karen: Like fudge, we are. Adam: No, really, we could make it cool. We could incorporate our own secret passageways.... Karen: Ooooooooooooooh!! Adam: .....just like in Webster. Karen: Huh? Adam: You know, he had his own secret passageway that came out from behind the grandfather clock which led up to his own bedroom. Karen: (Silence) Adam: What? Karen: I can't believe you remembered that.