- Wanna buy a duck?
- A what?
- A duck!
- Was it invented by Marjorie Flack?
- Of course it was invented by Marjorie Flack!
- Does its quack echo?
- Well, kinda!
64.225.124.150
Note: this challenge reportedly doesn't work well when accessed from Ubuntu 20.04; consider accessing it from a different operating system.