nads n. Testicles; plums. abbr. gonads.
nadbag n. Nutsack; scrotum.
navigator of the windward pass euph. Rear admiral (qv).
necking turds v. Descriptive of one suffering from halitosis. As in, "Excuse me, madam, I don't wish to appear rude, but have you been necking turds?"
Niagra FallsNEW euph, To jizz down the small of one's back so that the jizz creates the now famous 'Niagra Falls'
Niffkin's bridge n. Female equivalent of the Biffin bridge or barse (qv).
night watchman n. A copper bolt that has failed to flush away and is discovered the next morning.
nipping the turtle v. Crimping off a length; shutting the bomb bay doors.
Nobbies rhym. slang. Piles; Emmas; bum grapes. From Nobby Stiles, combative, bald, false teethed 1966 World Cup winning English footballer.
nodding dog n. An ugly woman performing horatio in the back of a car.
norks n. Knockers.
norton n. Bearded clam; Beetle bonnet (qv).
Norwich exclm. Acronym used on military correspondence - Knickers Off Ready When I Come Home. First used during WW1, when Norwich was known as Korwich.
notcher n. Biffin bridge. The area of skin between the clock-weights (qv) and the starfish, so called because it's 'notcher' bollocks and it's 'notcher' arse.
nurfing v. Garbooning (qv); nerding; pooming; shniffle-piffling; snaffling; snarfing; snarzing; snerking; snurdling; snurging. The (presumably very common) act of sniffing a lady's bicycle seat.
nut-butter n. The lightly salted dairy product served hot from the male churns (qv) onto baps.
nutmegs n. Balls that hang between a footballer's legs.