Top Definition
n. The driver in front of you who is driving ten miles under the speed limit
Sorry I'm late for work, I kept running into road slugs on the way here.
by Liz Silva July 21, 2011

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Extremely slow driver on the road.
Honey, I'm gonna be late, there's a road slug in front of me.
by Amalright November 19, 2013

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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