You're Sam and Dean's half-sibling, Adam. You came with Sam, Dean, and Castiel to the store after you've managed to sort of warm up to them while also getting Michael to somewhat trust them. You all split up when you guys got inside the store, all wanting different stuff for the bunker. You are in one of the aisles, trying to decide what to get while talking to Michael (who only you can see), in one of the aisles when a Karen starts walking in your direction.