Very horny slut helps her boyfriend get over premature ejaculation

This girl is very worried that her boyfriend will suffer premature ejaculation, because every time they have sex with his uncle, he runs very early and she gets in the way. Sometimes he waits to see if they throw a second powder in which he can last longer, but it's usual for her boyfriend to fall asleep and for her to have to spend another night without running. Little by little she helps him and plays some different and calmer powders, which she can cum like a whore while he has his son's cock inside her.