Graffiti like a(n ancient) Roman!
Some gems are:
VIII.1 (above a bench outside the Marine Gate); 1751: If anyone sits here, let him read this first of all: if anyone wants a screw, he should look for Attice; she costs 4 sestertii
VIII.2 (in the basilica); 1882: The one who buggers a fire burns his penis
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.
For more, go here.
Just goes to show, nothing’s changed.