n.q.o.c.d., phr. — Green’s Dictionary of Slang

n.q.o.c.d. phr.

also n.o.c.d.

[abbr. not (quite) our class, dear]

(UK/US society) used of one who is deemed socially unacceptable.

1981		Z-Link 30 Oct.–1 Nov. 🌐 Major St. Grotlesex crowd here – you won’t have to worry that he’s N.O.C.D.
1989		T. Blacker Fixx 173: Jonathan Peter Fixx was ‘Not Quite Our Class, Darling’.
2003		K. Cage Gayle.