I'm Gonna #14

I'm gonna initiate conversations with people I have seen before for the sole purpose of identifying them.

"Don't I know you from somewhere?"
"Errr, I don't think so."
"Yeah, I sat next to you on the bus two days ago."
"Oh"
". . ."
". . ."

For the proper effect, the awkward silence, which should last a minimum of 8 seconds, is followed by walking away.