`` Joe 's Garage '' is a single on Frank Zappa 's 1979 album Joe 's Garage Act I. After the introductory track , `` The Central Scrutinizer '' , this song begins the story of Joe 's Garage . Although it only charted in Norway and Sweden ( where it was a top 20 hit in both countries ) , it was one of Zappa 's songs which had the most airplay on American FM radio , at the time still album - centered . The song was played in concert from 1980 to 1988 along with the song `` Why Does it Hurt When I Pee ? '' in all tours of Zappa 's after the single 's release . The single version of the song lacks many of the special effects that the album version contains . The single version of `` Joe 's Garage '' was put onto Zappa 's best - of Strictly Commercial .

Question: who sings why does it hurt when i pee
Answer: Frank Zappa