Some Karen was beefing about a 25¢ off coupon. The coupon was for a 42 once bottle of something, but she wanted a 28-ounce bottle. The coupon was rejected when scanned, because, duh, there was no product to match it. There was nothing the cashier could do, but Karen just kept demanding 25¢ off.
Finally, the guy ahead of me in line marched up to the counter, slapped a quarter down, and said, “There’s your f@#king 25¢ off, now pay your f#@king bill so the rest of us can go on with our days!”