Naughty Or Nice?

This seems to be a season of notable conversations. Here's another.
(The dashes represent the overlappedness of the exchange.)

CAST OF CHARACTERS
E = employee (50-ish-year-old female)
S = me

LOCATION
I am at the Forest Grove Bi-Mart check-out area, wanting to pay for holiday candy and other stocking-ish items.
In case you don't know, Bi-Mart is a cheap department-ish store in need of a thorough cleaning.

* * * * * * * * * *

E: Looks like someone is getting done with buying all those little things for Christmas.

S: Yep, that would be me. It's nice to have it done.

E: So, do you have someone to take care of you and, umh - your stocking?

S: Uh, yeah.

E: Will you get a nice present? Have you been nice - or naughty?

S: I don't really know - I've been OK, I guess.

E: Well, I've been kinda naughty -

S: -oh, well, umm-

E: -and at times, I've been downright bad-

S: -so, the debit card machine-

E: -y'know and I was wondering if maybe-

S: -has a message here that it's-

E: -you were naughty, too.

S: -waiting for you to do something, so I can leave.

* * * * * * * * * *
To answer your questions:
* No, she wasn't on drugs (not a Grover Meth-ie), though she must have been quite desperate.
* No, I will not be shopping at Bi-Mart again.
* No, it wasn't Tammy.