It's only the largest freestanding mud dwelling ever built, that's all.
6 seconds sound clip from the Vacation (1983) movie soundboard.
You can hear this line at 00:24:49 in the DVD version of the movie.
Quote context
[...]
- Catherine said we just stay on 50.
- Well, I was thinking about shooting over to 54 and zipping down to Liberal.
- It's only the largest freestanding mud dwelling ever built, that's all.
- You see, kids, the pioneers didn't have bricks, so they used mud.
- They didn't use mud, they used sod, Dad.
- Right, Audrey, and when they ran out of sod, they used mud.
- Clark, let's just skip the House of Mud.
- I think Dodge City was enough for one day.
[...]