I get ideas for little scenes all the time. I try to jot them down when they occur, 'cause my memory is terrible - I'm lucky to remember where I live and my wife's name.
I have no story (yet) in which to use this lil' interaction. But someday, when I'm old and my Muse has departed, I can dig up big piles of these little notes and keep right on creating! In theory, anyway.