whistlecock, n. — Green’s Dictionary of Slang

whistlecock n.

also whistleprick

[an initiation ritual-cum-prophylactic whereby the underside of the penis is slit to make a permanent incision in the urethra; the effect is to prevent the normal ejaculation of semen into one’s partner]

(Aus.) a derog. name for a Native Australian, an Aborigine.

1898		Truth (Sydney) 13 Nov. 4/8: Another scribe, in another journal, gets this piece of flapdoodle off his chest, and, presumably, feels as proud as the Diamantina ‘whistle-cocks,’ (I dare not define the hyphenated cognomen in these columns.).
1918		Swan Exp. (Perth) 26 Apr. 5/2: I’ve had a sample of what these whistlecocks like ‘Keep Smiling’ are prepared to do under the lap of patriotism. Rather than assist the poor unfortunates who have been taken down by land sharks they did all in their power, and succeeded, in prolonging the misery in many cases of soldiers’ dependants.
1941		Baker Popular Dict. Aus. Sl.
c.1975		letter in Eunuch Archive (2002) 🌐 Now the Welebel (youth) places his penis in the subincised penis and through constant friction succeeds in effecting an ejeculation of semen on the part of both. From this information it can be seen why the subincised men of the Pitta-Pitta tribe are (according to Roth) called ‘Meko-maro’ (vulva-possessors). The English have coined the nickname ‘Whistlecock’ for the Australians who possess such an artificial hypospadias.