Sopra la panca la capra campa, sotto la panca la capra crepa*! There, that’s a scioglilingua.  Scioglilingua is a bit of pronunciation conundrum in itself, as it’s not that simple to pronounce, either: it comes from the  word sciogliere — to melt, but also to free or disentangle — and, of course, lingua — tongue. 

It appeared in our beautiful language for the first time in 1887. In English, we call it “tongue twister” and the sense remains pretty much the same. A scioglilingua is a sentence filled with alliterations and assonances (in short, the regular repetition of consonants or vowels within a word, a sentence or a verse to create the illusion of a specific sound) that makes its pronunciation very hard. They are very popular among children, who often use them to taunt each other about how good they are at repeating them out loud. It is often used as an exercise for people who have language problems, or just to get us to say words correctly.