Inconsiderate

I am really inconsiderate these days. Look: moving mobile phone instead of mouse, putting two tea bags in a mug, adding gold paste to the tea (instead of sugar), losing money, falling down on a very flat surface,... All and all are symptoms of this...

You know, there was a kid, highly inconsiderate. His mom used to ask him watch himself when going outside. Here is a typical day of his life outside the house: After playing with friends, he does not notice that one of his hands is left in the playground. Then he goes to the street to take a look at the shops. He, surprisingly, leaves his nose there, then an ear, and...
He goes back home with his mom waiting. "Oh. Not again", says the mom and continues: "How careless you are my little kid".
Then, the same as the days before, the door is knocked. Yes, neighbors are lined at the door bringing his parts to be fixed kindly...

I do not know the author to give you more info. However, I'd like to ensure you that the most important part of the body was never left outside. Yes, his heart. To tell the truth, it was kept by mom...