Giant Eagle Marketplace, Shadyside.
Preppie with Bluetooth Headset is waiting in line behind two other customers:

Cashier: Advantage Card™?
[Preppie on Bluetooth hands the Cashier his keys.]
Cashier: [referring to customer actually paying for groceries] No… his.
Preppie: Oh… sorry.
Preppie: [into headset:] Listen, I’m going to have to go; I’m at the grocery store.