Rocko's Modern Life, Season 4

[In the future of O-Town, Filburt's sons, Gilbert and Norbert, are searching around inside Rocko's abandoned house]

Norbert:
[from upstairs as sound of glass shatters] Ouch!

Gilbert:
What was that?!

Norbert:
I think I broke an antique!

Gilbert:
[annoyed] Ah, for Pete's sake. [heads upstairs and finds Norbert in a room, sitting on the floor and holding a photo frame] What'd you break?

Norbert:
It's a picture.

Gilbert:
I believe the correct term was "phonograph."

[last lines of the series]

Rocko:
So, Filb, what have you been up to these past 17 years? [beat]

Filburt:
Are you kiddin'?

Heffer:
[singing] Nine hundred bazillion bottles of root beer on the wall... / Nine hundred bazillion bottles of root beer...