Here's an amusing interaction I had with a student before class the other day:
A male student walked up to me, took a deep breath, made a concerted effort to stop for a few seconds, and said, "Hi! How are you? I'm fine, sanks. Goodbye."
During the entire "exchange", I had a bemused look on my face, but didn't have the opportunity to respond to the greeting because the boy quickly walked away after he finished his piece.