before there were subway cars or semi trailers; it's been around longer than we thought...
some of the best ones...
I.2.20 (Bar/Brothel of Innulus and Papilio); 3932: Weep, you girls. My penis has given you up. Now it penetrates men’s behinds. Goodbye, wondrous femininity!
III.5.1 (House of Pascius Hermes; left of the door); 7716: To the one defecating here. Beware of the curse. If you look down on this curse, may you have an angry Jupiter for an enemy.
VII.12.35 (Vico d’ Eumachia, small room of a possible brothel); 2145: Gaius Valerius Venustus, soldier of the 1st praetorian cohort, in the century of Rufus, screwer of womenhttp://www.personal.kent.edu/~bkharvey/roman/classes/graffiti.htm