A person driving behind you or in the next lane who speeds up to pass you, only to slow down to less than your speed when he does so.
I need to get out of this lane, but this fucking snailgater just sped up and blocked me in.
by SLLGs August 7, 2008
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1) The act of driving below the speed limit with the effect of backing-up otherwise normal traffic flow. Artificially creating a dangerous tailgating situation by holding a position on a multi-lane road, obstinately pacing another slow-moving vehicle in an adjacent lane, while purposefully avoiding eye contact through the rear view mirror. 2) Denying someone access to a public, or nominally "shared" resource (e.g., parking place, restaurant table, etc.) by lingering in/on the resource long enough to alter the mood of the person waiting. 3) Any passive-agressive act of intentionally underperforming in order to teach someone, usually someone perceived as a jerk, a lesson that more than likely they will never learn--otherwise, an utter waste of everyone's time.
The ambulance driver testified that if it weren't for the Prius driver snailgating, the heart attack patient she was driving to the hospital may have survived.

It's always the other guy snailgating; you would NEVER do that, right?

Scientific studies have proven that the snailgating of merge hoppers actually makes traffic worst than if everyone on the uses all the available road capacity
by Roger 55 May 27, 2010
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