Disco Girl

"Disco Girl" is a Top 40 hit song by an Icelandic pop group named BABBA that Dipper and the Multi-bear enjoy singing and listening to.

Lyrics
Disco girl

Coming through

That girl is you

Ooh oooh, ooh oooh

History
Stan Pines catches Dipper singing the song to his reflection in the bathroom after a shower. Later on, the Multi-bear confesses that it is his favorite song, persuading Dipper to change his mind about killing him and to accept his own form of masculinity. Then they both sing the song together.

Trivia

 * The band and song are a spoof of a real world Swedish group, ABBA and their song Dancing Queen.