This marriage has two children of the same age who are the result of a previous relationship. They get on very well and, on the occasion of their mother-in-law’s birthday, the daughter tells her son that she is now her half-brother and that they will bring her a birthday cake so that they can celebrate it together. They went to buy the cake in a good confectionery.
When they arrive, they prepare everything, they put plates and candles and they leave everything prepared to be able to make a surprise when they enter the room. When they go up the stairs, they come to the door and come in to surprise their parents. They are frozen when they see how their father fucks his mother like crazy while she gasps like a dog.