[the music starts becoming more metallic]
Butt-head: Yes! Yes!
Beavis: Yes! Metallica rules!
Butt-head: They rule.
Beavis: [singing along] Dunununuh! Dunununuh! Darkness! Imprisoning me! I cannot live! I cannot die!
Butt-head: Shut up, Beavis!
Beavis: Oh. Sorry, man.
MGMT, It's Working
Butt-head: Yes! Yes!
Beavis: Yes! Metallica rules!
Butt-head: They rule.
Beavis: [singing along] Dunununuh! Dunununuh! Darkness! Imprisoning me! I cannot live! I cannot die!
Butt-head: Shut up, Beavis!
Beavis: Oh. Sorry, man.
MGMT, It's Working
[the music starts becoming more metallic]
Butt-head : Yes! Yes!
Beavis : Yes! Metallica rules!
Butt-head : They rule.
Beavis : [singing along] Dunununuh! Dunununuh! Darkness! Imprisoning me! I cannot live! I cannot die!
Butt-head : Shut up, Beavis!
Beavis : Oh. Sorry, man.
MGMT, It's Working
http://www.tv-quotes.com/shows/beavis-and-butt-head/quote_36623.html