tupney nudger
Slightly more derogatory variant of the term nudger, meaning male homosexual. The 'tupney'(short for tuppence, or 'two pence') part of the phrase implies that the subject is not only a homosexual, but one whose professional sexual sevices can be purchased quite cheaply.
There he goes, off on the game again, selling his crack to all and sundry. I say, What an A-grade tupney nudger!