The Nourishment’s website is rather confusing, but the pseudo-band seems to be headed by Archbishop Jason Polland and Joe Tepperman, both of whom have elaborate discographies with other groups, as solo artists, and even some writing credits.
The song “Slapback” is from their 2000 EP “Volume Four Billion”. Their sound is a bit hard to place, but the voices are fun and the lyrics whimsical. (The blurry, bouncy beat makes me want to lace up some Doc Martens and jump about the place a bit!)