(n.) Someone who has no charm, and is a perfect worker. Works for shit money in any job and never complains. Charactorless and un-noticed. Most of you, then.
When you open your Uber/Lyft app and see available drivers around you, those are ants. It's an expression commonly used to describe an abundance of drivers saturated in an area looking for pickup requests. An ant is usually a fairly new driver that doesn't know the market well or doesn't bother to check to see how many other drivers are in the area scrapping for passengers.