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 brother licked his sister's mink and then showed her his love with his cock. I got to say, it was pretty lively. And in different positions. Sis moaned with pleasure. To return the favor, she licked his cock like a popsicle on a hot day.