"It's Saturday" is a song by American rock band Marcy Playground, released as the first single from the band's second studio album, Shapeshifter (1999).

It was originally titled "Teenage Hypochondriac" but was changed before the release date of the album.

Although nowhere near as successful as the band's earlier smash hit "Sex and Candy," "It's Saturday" managed to hit number 25 on the US Modern Rock Charts.

The lyrics of the song share common themes with the poem "Sick" by Shel Silverstein.

One scene shows them crawling into the bed of Pope John Paul II.