A girl who can solely live off of beverages, whether it be (including, but not limited to) coffee, juice, refreshers, teas, basically anything but water. They do occasionally drink water, but it is mostly other drinks. Most of the time, these girls will have multiple beverages at a time. In these instances, each drink will serve a different purpose: one for daily caffeine intake, one for hydration, & a fun beverage. This may look like a coffee, a green tea with low sugar or a fruit water, & a refresher.
Person 1: Oh my gosh why does that girl have three different drinks in her car?
Person 2: Have you never heard of a bev girl?!