There is no response. You shout. They turn around and ask:
‘What do you mean?‘
You know they’ve heard you. You repeat the utterance so they don’t misunderstand it.
Later you start to talk again but the ones who listen rarely reply. You start walking around, flipping your hand in the air, as if you had nothing to say.
Finally you give up, even on the shouting. Instead you stammer:
‘Just talking to myself!’ shrugging your shoulders and flipping your hand in the air.