I would be totally angry if someone threw away my Mongolian Grill leftovers!!! I wouldn't consider that petty at all!
I don't remember ever having my lunch thrown away, but when I was in college, one of my co-workers did eat my lunch once. It was homemade beef tips and noodles, quite obviously no way to mistake that it WASN'T their lunch. He told me it had been in the refrigerator since the day before so he thought no one was going to eat it. Sheesh!! I made the guy who ate it take me out to lunch to make up for it. It wasn't until later that I realized he probably did it on purpose so he could have an excuse to take me out to lunch. ;-) LOL
Now, for my pet peeves (besides many of the great ones that have already been mentioned): I hate it when you're waiting in a long check out lane and they open the next one and instead of taking the next person in line, it's a free for all and the last person gets to jump ahead of everyone who's been waiting.
I hate when you buy a drink at a drive-thru and they don't fill it to the top.
I hate when people run into friends at the store and block the aisles or the shelf you need to get to while standing there talking. Same goes for people in cars. I was in a parking lot needing to turn right down a driveway next to a restaurant and this guy was standing next to a truck talking to the lady in it blocking the drive I needed to turn down. I honked, they wouldn't move. He just waved like "give me a minute". I waited. I honked again. Nothing. I yelled out my window for them to move. Nothing. I finally called the police 'cause I had already waited close to 10 minutes and I was getting mad. I think someone else must have complained before me because the police showed up within like a minute and made them move along.
I hate it when people don't wait their turn at a 4-way stop sign.
I hate it when the pharmacy had a problem filling your Rx but doesn't bother to call you to tell you and you show up to pick it up and it's not ready.
I hate when you order something at a restaurant and 10 or 15 minutes later when you're expecting your food, your waiter comes up and says "Oh, sorry, we don't have anymore of that. Would you like to order something else?" Grrrrrrrrrr!!!!!
I hate it when I'm in the middle of doing something, and someone (usually my husband or my mother) says "You need to (enter whatever it was I was already doing here)". Uh, I'm already doing it!!!!
I hate it when I'm either across the room, or in a completely different room, usually working, cooking or doing something else, and my kids come up and ask me to do something for them when my husband is sitting right next to them doing nothing. Why don't they ever ask the dad???
Oh my gosh, I could go on and on. I'm stressing myself out. Time to stop. Serenity now, serenity now - Ohmmmmmm.
N. :-)