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!
It's good taste to pound a girl's ass! Each of them knows what her pussy is for, but giving her ass to a prick is no easy matter. But when she gets a taste for it, she'll send her dicks up there herself. I know these anal pranksters, but they don't look like they understand.