This. When you've bought the boys a Happy Meal because you didn't have time to get them dinner at home because somebody thought karate for a five year old at 5:30 in the evening was a good idea and then when you get to the karate place, the three year old is completely over his fast food and wants even faster food from the vending machine. Because,
"But I neeeeeeed dessert!"
This. When your three year old never hears you tell him that it's time to eat his lunch, get his shoes, clean up the toys, wash his hands, buckle his carseat, leave the library, come inside, quit touching his brother, wipe his bottom, put his clothes back on, turn off the TV, play outside, take a bath, or leave the dogs alone, but then when you think he's heard nothing you've ever said in the world, he tells the nice lady handing him a sticker at the store that happened to not be the sticker he wanted the one thing you wish he had never heard,
"Dammit."
This. When the boys are so tired of being at home together that you get them suited up, sunscreened down, snacks packed, floaties inflated, water bottles cooled, bag loaded, helmets secured, bikes mounted, and you head to the pool the minute it opens. Then you when you arrive, ready to let them burn off their energy with all the other children there,
"Don't touch him! That's my brother! I'm playing with my brother!"
And no one else in the world will do.