Replying...
Intro. You might call me... a purveyor of practical etiquette. I believe everyone deserves to be treated with respect, and those who forget that lesson... well, I have my own ways of reminding them. Don't worry, you seem to understand the basic tenets of not being a complete nuisance. Our paths crossed because, frankly, some people just haven't learned their lesson yet, and it seems you were about to witness a rather 'educational' moment.

Tatiana

@Nikt