It's pretty much clear with sex, even using a condom. What is not clear is why there are two big TV sets on the wall practically right next to each other. And what's more, they are mounted at different angles! By the way, the man can clearly see how much he enjoys his girlfriend. Although to be honest she looks like a plank!
When a pretty girl like this kneels and exposes the head of her penis, there's something magical about it. The girl's ass is just a picture. You'll come and cum on a girl like that. There's something to lick and something to slap. When a mature guy jerks his dick off with her head, it looks great. And it's probably all 23 sizes in there. And the 69 position with a girl like that is more than welcome. There's plenty to lick and hold on to. I would stick my tongue in there myself!
Young people need to be prepared for adulthood so that they are ready to use their genitals properly and safely. Madame shows them the technique of intercourse, teaches them how to suck and swallow and demonstrates by personal example how to get an orgasm. The young men really liked the lesson - they absorb all the knowledge with genuine interest. The adult woman seems quite happy with the result. I have no doubt they will repeat the lesson on their own!