This is some Reddit level humor.
> VI.14.43 (atrium of a House of the Large Brothel); 1520: Blondie has taught me to hate dark-haired girls. I shall hat them, if I can, but I wouldn’t mind loving them. Pompeian Venus Fisica wrote this.
Amusing to see the blonde vs brunette debate even back in the day.
Overall, the sense that I get from this grafitti is that people back then aren't that much different than us. They too believed they had invented sex very much like our generation and every other generation that came before it. To be honest, it seemed like they had a much better time.