The image of a banker, well dressed at his desk in a fit of imagination holding a pencil in his hands as if it were a gun, on an imaginary crime spree, imagining himself holding up the bank, saying "pew, pew, pew" as he fires his pencil pistol menacingly at invisible tellers...
(Inane, I know, but upon waking from it I reminded myself to remember it, it seemed to acquire a disproportionate importance, the idea of a banker imagining himself to be an outlaw, when the profession of banking offends every law already, only the suit lends it legitimacy...)