I'm walking down the sidewalk. Walking the other way are two fatasses, basically taking up the entire sidewalk. I manage t squeeze through them, and when I had gotten about ten feet past them, one of them yells angrily at me, "You should yell 'Excuse me!'"
I yell back, "You should walk single-file."
They yell back, "Excuse me?"
I yell back, "Thank you!"
Aware that they have been served, they yell back, very distraught, "NOOOOOOOOOOOOOOO!"
And I dart off around the corner.