As the saying goes, when in Rome do as the Romans do. Of course, as a visitor, you don’t have to subvert yourself completely to assimilate into the local way of things. However, you might have a smoother trip if you keep a few basic do’s and don’ts in mind. Rubbing a Roman the wrong way might invite a dreaded sneer, trigger a “Mama mia” or inspire a nasty hand gesture. If you want to avoid some awkward social gaffs, cultural faux pas (passo falso) or tourist traps while in the Eternal City, here are 10 things not to do when in Rome.