history: The other day I was at the store and the woman ahead of me acted like an alien who had never seen a self checkout machine. I wasn't in a hurry or anything but it was obnoxious that she was holding everyone up.
current: I was at the store the other day and the lady ahead of me had no idea how to use self checkout, I wish she would have used the regular line instead of holding everyone up.
next: Oh I hate when that happens. we go to self checkout to avoid things like slow lines.