What a family, I'll tell you! Mom, while cleaning, noticed that her son had a morning erection. It's normal for that age. Instead of pretending that nothing happened, she called her brunette daughter and asked her to help her brother. In the end, both were satisfied, and the mother was glad that peace reigned in the family again.
So actively did the brunette suck that big cock that at the end of it all she could only moo. Overworked!