Acronym for Double Income, No Kids, Unbelievable Mortgage. Describes young hard-working marrieds (or a pair of faggots) who are deferring having children whilst they plough all their money into a very large housing loan. See also D.I.N.K.
Look at that huge mansion; a couple of D.I.N.K.U.M s there.
by Busted Hyman July 06, 2006