I've just witnessed a completely civil and righteous rage against the machine by an elderly man (80s+) at supermarket self-service checkout here in small city Aotearoa #NewZealand and it was a little bit wonderful.

He'd just finished paying for his groceries when the machine started saying "Please take your items" every 15 seconds or so. At first he just says "I'll do it in my own time thank you," while bagging things up.

The machine keeps telling him to take his items. After around the 5th time, he starts really arguing back:
"I don't have to do what you tell me to do."
"I'll take as long as I need thank you."
"I'll thank you to stop harassing me."

On around the seventh or eighth request that he take his items, he stands back, crosses his arms and says loudly snaps, "No! Not until you be quiet!"

The machine keeps going. The man just stands there, crossed arms, chin stuck out. A standoff is on. Staff come over and ask if they can help and he tells them that if they switch the voice off, he will continue bagging his things and go. If they don't, he's retired and can wait all day.

Machine is turned off/down with sympathy from supermarket staff. Moments later the man leaves the supermarket with the air of someone who's just won a war, expression completely stoic.