It's less the fact that 'history repeats itself' and more that 'nothing really has changed'.
My favorite example is the graffiti found on the walls of Pompeii, preserved in volcanic ash for 2000 years.
"Gaius' mom fucks with my dog"
From Bar/Brothel of Innulus and Papilio: "Weep, you girls. My penis has given you up. Now it penetrates men's behinds. Goodbye, wondrous femininity!"
House of the Citharist, below a drawing of a man with a large nose: "Amplicatus, I know that Icarus is buggering you. Salvius wrote this."
House of Cuspius Pansa: "The finances officer of the emperor Nero says this food is poison" (a 2000 year old restaurant critic)
Gladiator barracks: "Floronius, privileged soldier of the 7th legion, was here. The women did not know of his presence. Only six women came to know, too few for such a stallion."
Herculaneum bar, next to a drawing of a phallus: "Handle with care"
House of the Centenary; in the latrine near the front door: "Secundus defecated here" three time on one wall"