The title refers to the back page of a popular 1950s Italian magazine which had a section devoted to old jokes that were no longer funny but still evoked a sense of nostalgia. One such joke is repeated throughout the film: "How do you get four elephants in a Fiat?" The answer: "Two in front and two in back".
Giovanni: You think your children are your own, then they learn to walk and they leave you. Know what they say back home? "Raise hogs, 'cause then you can eat them"