Never up never in

NEVER UP NEVER IN
A cliche of golf meaning that unless a putt is struck hard enough to reach the hole it has no chance of falling into the cup.
NIBLICK ...

Never up never in, the bywords of the slam putter.
nineteenth hole
Normally in golfing parlance, the bar. In British Crazy golf it's the lucky nineteenth, a chance to win a free game.

Net - A player's final score after he subtracts his handicap.
Never up never in - referring to not hitting the ball a sufficient distance to reach the hole
Niblick - An obsolete lofted club, used for playing from sand and from the rough.

See also: Never in, Overlapping, Lead, Equipment, Shank