When an aroused man frantically rubs his turgid penis, it gives the impression that he is polishing it until it shines; hence he is a nob shiner. Used as a derogatory term to indicate a person who is behaving foolishly in the eyes of the speaker.
I saw that Halifax advert the other day and, I tell you what, that Howard is a right nob shiner.
by Craig August 10, 2004
one whom shines nobs
Oi, nobshiner! Get your hand off it!
by nobshinerous August 18, 2003