In line at the Speedway. There's only one cashier, helping someone who wants the entire Speedy rewards system explained to her. A line forms behind me, so they open another register. Cashier says, "I can help whoever is next."
The dude behind me jumps out of line and races over there, leaving me stuck behind the dummy who needs a simple points system explained in painstaking detail. When finished, the line-cutter smugly traipses outside.