stress makes me icky

Today was so great until I got ready to leave the house. I was changing Daphne's bottom because she had one of those that shoots up the back of her diaper. While changing her, she starts up again and poops allover my hand and her blanket. I finally get her clean and we are ready to take Isaac to karate. The thing is, he'd been complaining the entire time that he didn't want to go and doesn't like karate anymore. Daphne starts crying because I've put her in her carseat and she tired. Daisy then starts yelping. The kind that make you cringe. Grrr.
We are loaded up and I take Isaac to his class. I figure that I will hit the coffee shop and relax a bit while he's there. Daphne has finally fallen asleep and I'm really looking forward to some caffeine. I get to the coffee shop and it is closed for a company party. I try the one down the road and they're closed too. It's 6:15 WTF? I end up going to Starbucks...meh. I stopped at smiths after that to pick up a few things and began checking out at the self checkout isle. I accidently rang one up twice so I needed help from the cashier. I'm in a foul mood by this time and just wanna get the hell our of there. The cashier is a younger guy who says "Sorry, but you'll have to buy another one. I can't take them off". He grins and gives me a light elbow side. I'm in a very negative place. Stressed. Frustrated. All I could think about is kicking him in his ball sack.