TIL that several graffiti from Pompeii and Herculanum exhibit similar behavior to the modern behavior. Some examples are " I have buggered men" and "We two dear men, friends forever, were here. If you want to know our names, they are Gaius and Aulus."
https://www.reddit.com/r/Damnthatsinteresting/comments/1to9cs8/til_that_several_graffiti_from_pompeii_and/