Jump the line at the grocery, huh?
Very petty and yet ...
It's a busy day at the grocery and all the lines are long. They get another cashier going and a few of us move to it (this is back before self-checkout). Then a lady pushes past from the back of line to jump in front of me. "Hey!" I say. "C'mon, really?" She says nothing but smirks a little and stands her ground. My eye contact with a few others in line confirm, yeah, that was a bitch move.
I begin to quietly berate her (G-rated stuff, "Wow, not cool," etc.) and she turns away to ignore me. Aha. I continue to berate her to keep her turned away and start taking things out of her cart. This looks important. Oh, I bet the kids wanted this candy. I'm putting a few things in my cart, but most goes on the gum rack and under belt where the small baskets live. I even got a few off the belt after she unloads. She never sees it.
Hopefully, she figured it out when she finally got home and the family is asking for the bbq sauce and snacks.