"Stan Darsh" is a song performed by Tad Mikowsky in the Season Six episode, "Asspen".
Background
The patrons of Aspen Heaven Ski Resort decide to host a fundraiser party to save their Aspen Youth Center from being bought out by Tad Mikowsky, who wants to bulldoze it.
Trying to antagonize Stan Marsh into a re-match ski race on the K-13 mountain, Tad interrupts the dance party and proceeds to sing this badly written, and poorly performed, song on an electric guitar.
Lyrics
Staaaaan... Daaaaarsh...
Stan. Darsh. Darshy Daaarsh
Stan Daaarsh
Stan Darsh, Standarsh
Stan Daaaaarsh Daaarsh
Stan Darsh...