Nyeh Heh Heh!

Nyeh Heh Heh! is the 16th track in the Undertale Soundtrack, and the 14th track in the Undertale Demo OST. It is an upbeat song with an 8-bit sound. In addition to being Papyrus's theme music, this track is part of an easter egg that plays at the end of a Pacifist Run of the demo, playing during and after Sans and Papyrus's conversations.
== Trivia ==
* According to an interview with Toby Fox, this was one of the six songs originally composed for other projects. The other five were Fallen Down, Heartache, Bonetrousle, Another Medium, and MEGALOVANIA.
* The title of this song is Papyrus's catchphrase. In the Epilogue of the True Pacifist Route, Monster Kid says this if the protagonist saved them during the bridge sequence.
== References ==
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zh:Nyeh Heh Heh!