In "Heaven Sent", at the beginning
when he is in the bedroom and the thing lurches up to him, he says "when i was a very little boy there was an old lady that died "pop" they covered her in veils, but it was a hot sunny day and the flies came, so who's been stealing my nightmares" why make the pop sound?.
Is it a saying or an old time gesture of some sort? It just seems strange to be put in for no reason. I want to know if there is something I'm just not getting.