Another thing I absolutely cannot stand is when you're grocery shopping later in the evening (10PM or later) and you've got some trash parents with their litter of toddlers. Every single one of them is being a brat, crying hysterically, and keeps making a mess in all the aisles. Then, to make matters EVEN BETTER, the parents are going ape shit and yelling at their kids to shut up.
Really, Mom and Dad? You know, I don't have any kids, but I'm still a good enough parent to know when my kids are crying because they want to go to sleep. They're fucking tired, they need to be at home in bed. It's even worse when you're stuck behind them in line, and the fat dyke mom is too lazy to help the husband lift up the 60 pound bag of Ol' Roy dog food from the bottom of the cart, or help all the kids put things on the conveyer belt to get scanned. It's seriously a murder scene waiting to happen for me.