Green’s Dictionary of Slang

harry monk n.

semen.

2001		Guardian G2 9 July 22: Cockney viewers will have realised from the title (Harry = Harry Monk, Boat = boatrace and that’s as far as I’m prepared to translate).
2002		D. Shaw ‘Dead Beard’ at www.asstr.org 🌐 The problem is that I feel too good, and if the pace doesn’t slow down soon Dionne is going to get a high speed injection of harry monk straight down her billy goat.