"Spank Thru" is a song by the American rock band Nirvana, written by vocalist and guitarist Kurt Cobain. It appears on the compilation album Sub Pop 200, released in December 1988. Though rarely performed live beyond the first few years of the band's existence, the song is significant in that it helped lead to the formation of Nirvana by helping convince bassist Krist Novoselic to start a band with Cobain. Novoselic specifically referred to the song as "the first Nirvana song" in the liner notes to the live compilation album From the Muddy Banks of the Wishkah, released in October 1996.