>>40976358
The 'mid conversation' is a trick to make you think that they are always talking about you or that they have recently been having a lengthy yet casual discussion about you. They haven't. If they had you would have been able to hear more than their well chosen sentence.
This is usually a psyche or a street theater. If there ever existed a lengthy discussion about you it would be far less about you and far more about what exactly to say to you to get the better of you.
Don't let it get to you. Don't let it start you down the path of thinking that every social interaction is some pre-scripted bullshit.