“A-dunk-a-dunk-a-dunk-achino!”  The kid did some 70’s move as he sang and swiveled his knees.  I was a little stunned.  “Have you ever seen Jack and Jill?” he asked.  Still stunned. “Uh, no?” “You know Al Pacino?” “Uh, yeah?” “In the movie, he does this commercial for Dunkin’ Donuts, and this thing where he goes a-dunk-a-dunk-a-dunkachino.…