Her sister got hysterical over her boyfriend who drew a slutty picture of her - how skinny and flat she was. Her brother calmed her down and measured her waist and hip size, assuring her that she was awesome! Sure, her gratitude was inadequate - sucking her brother's cock, but didn't the girl deserve sympathy? When she wanted to remove her head already, he wouldn't let her - if she wanted to be a grown-up, then swallow it. And it seemed his sperm was to her liking. Now she could always count on him.
The nanny's responsiveness in bed probably gave her a reason to get a raise, and then she worked her overtime. The girl is beautiful, with soft forms, in which you want to enter and continue to fuck with pleasure. Not only is she comfortable to get underneath, but she's also comfortable to sit on top of your dick. Plus she's ready to suck and accept cum after sex. All convenience for the money.
Although young girls are thin, but they really excite their lovers and allow them to fuck themselves in different positions.