Staging is super, but the script could have been finished in a more interesting way, for example, either the awakened girlfriend would have thrown the friends out into the street, or even joined them and looking at her friend obliquely would have screwed her boyfriend much cooler than a mulatto!
I don't think it's his mother, but probably his stepmother. She looks very young. In videos of this genre, I like listening to the dialogues of the characters, I liked the scene in the shower when he just walked in. From the fact that there was no embarrassment, we can assume that this is not the first time they have done this while her father is not home.
This is something you haven't seen yet. German ladies served a bunch of men. Girlfriends worked their hands, mouths and asses hard.