A woman, usually older than forty, who hangs around "her favorite" Starbucks location for the sole purpose of eying (and trying to flirt with) the younger hott boy Baristas. A cursory glance at her cell phone may often reveal the background photo to be a snapshot snuck of the boy Barista she is currently after.
Often is excessively engrossed in Tarot cards, palm reading, and various astronomy shit.
Dude 1: Whoa, Dude 2, look over there the other side of the Starbucks store!
Dude 2: Oh my god, is that woman flirting with that younger guy who's making her drink?
Dude 1: Totally looks like it! But look- she looks old enough to be his grandma!
Dude 2: What a Starbucks hag!