It is the extreme close up scene at the end,where Marilyn is leaning onto her arms and he is behind her. (Her make-up was AWEFUL btw)Well, when she very suddenly gets up to turn to him, there is a HUGE string of drool coming out of her mouth. You would think, "ok, she is crying. Maybe this fits the scene." But it is such a nasty string of spit, that it could not be intentional.