R.J.
You were in the freakin parking lot of the grocery store. You were AT the store, just not in it.
This argument is over the words IN the grocery store or AT the grocery store???
You WERE grocery shopping, you were just at the very beginning part of it. Parking, getting a cart, heading down the aisle.
I mean... if we want to get really technical... if someone stops while IN a grocery store, to think about... I don't know... catepillers. Are they still shopping?
What are you doing? ACTUALLY.. the "100% correct" answer would be a 5yo answer:
"I'm talking on the phone, I'm finding a spot, found a spot, fixing my parking job, putting it in park, undoing my seatbelt, getting my list, stepping out of the car, thinking about peeing before shopping, closing my door, locking the door..."
There's a difference between the *absolute truth* and the general truth.
This is a semantics question. Not a lie question. In or At. But in either case, you WERE grocery shopping.
Sheesh.