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The act of driving slowly in front of someone, often preceded by cutting them up at a junction.

The nose-gater ususally drives at around 24.5 in a 30 zone. This can be due to a number of reasons:excessively new car (worried that air friction may scratch paintwork); old age (can't see, reaction speed gone); kids in car (irrational spawn-protecting behaviour); Micra driver (inexplicable) etc..

The opposite of tail-gating. Especially prevalent when you are trying to get somewhere in a hurry.
"Stop nose-gating me, you c***ypie!"
by marlinemcdagger February 05, 2010
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