White people...
What I found mildly amusing when I was in Pisa is that there are signs everywhere telling people to stay off the grass and literally nobody gives a fuck.
On a side note, the town of Pisa is surprisingly shit. It's not like Florence, Verona or Venice where like 99% of the town/city is beautiful (Venice was so stunning I think I briefly went into cardiac arrest). The Cathedral Square (where the tower is) is the only nice bit and it's a very small part of the town. The rest - shit.