U blocker n. A turd so big it causes a jobbie jam in the plumbing system.
U.D.I. Unidentified drinking injury. A mysterious injury received during a bender (qv) and of which the victim has no recollection.
Uncle Albert's beard n. See jelly jewellery.
Uncle Fester n. A goolie-ish bald headed man from the old Adam family, who occasionally rises and puts the willies up your missus.
undefuckable adj. Damaged beyond repair.
up to your nuts in guts euph. male Aus. Engaged in sexual intercourse.
undercarriage n. Genitalia (male or fem); wedding tackle.
undercrackers n. Keeks; shreddies; Y fronts.
unit n. Penis. As in: "I slipped her my unit".
up, in, out & off exclm. Extensive director's instructions to their leading actors in grumbleflicks.
up on blocks adj. Of a woman. A monthly MOTT failure due to a recurring leak under the beetle bonnet.
uphill gardener euph. He who hoes on the pink allotments; the pusher of a cheesey wheelbarrow (qv) up the kak canyon; a male homosexual.
U.T.B.N.B. abbr. Up The Bum No Babies. A reliable, yet illegal contraceptive device; opposite of an I.U.D.