Green’s Dictionary of Slang

to fellate; thus player of the pink oboe n., a homosexual.

1959		Goon Show 12 Jan. ser. 9 ep. 11 [radio script title] ‘The Spy or Who Is Pink Oboe’.
1985		B. Humphries Traveller’s Tool 94: Even visiting pillow-biters and performers on the pink oboe get special treatment in New York.
1997		Roger’s Profanisaurus in Viz 87 Dec. n.p.: play the pink oboe v. To perform oral sex on a man. Usually homophobic.
2000		T. Udo Vatican Bloodbath 81: [He] was a godamn muthafucken crossdressing player of the muthafucken purple-topped pink fucken oboe.
2003		Indep. Rev. 1 Oct. 5: Many of my media pals are players of the pink oboe.