Jiraiya's cuckoldry: I chose a scene from anime GTO where Bulma watches her boyfriend and his mother having sex

Jiraiya, a sneaky cuckold of a man, allow his friend, Bulma, play video games at his house. Little does he know, Bulma watches him and his girlfriend Yaoi; she has been spying on them. When Yaoi comes by, he is greeted with a look of disapproval from the woman Bulma refers to as her mom before she starts humping her mercilessly.