He shouldn't be watching his moms having sex, like at all. And he shouldn't be watching anyone else having sex before he was 18. So the new canon is that he lived in the brothel's 'back office' where the whores eat and sleep, and only started roaming the brothel's main halls when he turned 18, spending a whole year spying the current whores (not his moms, who had already retired and were now managing the place) and being teased by them. Then, on his nineteenth birthday, his moms wanted to throw him a surprise orgy party with the current whores but he decided to go to the New Capital instead.