Thanks to Homer (Simpson) and his circle, my kids learnt a little about a lot. When we took them to see Hamlet they already knew the plot. Similarly, Great Expectations held no surprises and they practically rolled their eyes when we slapped Spinal Tap into the DVD player.
Like Arrested Development, the gag of Girls is that characters of stature have the heads of children (note the title: by any common-sense metric the protagonists are 'women'). Hannah is archetypal; her inner child so vocal it has long put her outer adult out of business.